{"id":11743,"date":"2025-07-31T21:30:33","date_gmt":"2025-07-31T21:30:33","guid":{"rendered":"https:\/\/www.cgmotorsports.com\/?p=11743"},"modified":"2025-08-22T23:28:33","modified_gmt":"2025-08-22T23:28:33","slug":"bmw-eccentric-shaft-failure-guide","status":"publish","type":"post","link":"https:\/\/www.cgmotorsports.com\/bmw-eccentric-shaft-failure-guide\/","title":{"rendered":"Understanding Eccentric Shaft Failure: Quick Guide for BMW Owners"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"11743\" class=\"elementor elementor-11743\" data-elementor-settings=\"{&quot;ha_cmc_init_switcher&quot;:&quot;no&quot;}\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-6adcf230 e-flex e-con-boxed e-con e-parent\" data-id=\"6adcf230\" data-element_type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;,&quot;_ha_eqh_enable&quot;:false}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-105516b4 elementor-widget elementor-widget-spacer\" data-id=\"105516b4\" data-element_type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-4d6174ab e-flex e-con-boxed e-con e-parent\" data-id=\"4d6174ab\" data-element_type=\"container\" data-settings=\"{&quot;_ha_eqh_enable&quot;:false}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-50ecb19a elementor-widget elementor-widget-ha-post-title happy-addon ha-post-title\" data-id=\"50ecb19a\" data-element_type=\"widget\" data-widget_type=\"ha-post-title.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"ha-post-title elementor-size-default\">Understanding Eccentric Shaft Failure: Quick Guide for BMW Owners<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e2b717b elementor-widget elementor-widget-text-editor\" data-id=\"e2b717b\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>BMW\u2019s Valvetronic system<\/strong> is one of the most advanced variable valve timing technologies in the industry \u2014 but it comes with its own unique weak points. One of the most important components in this system is the <strong>eccentric shaft<\/strong>.<strong> And when it fails, it can lead to serious drivability problems and costly engine damage.<\/strong><\/p><p>Here\u2019s what every BMW owner should know.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-766282b elementor-reverse-mobile elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"766282b\" data-element_type=\"section\" data-settings=\"{&quot;_ha_eqh_enable&quot;:false}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-7cada01\" data-id=\"7cada01\" data-element_type=\"column\" data-settings=\"{&quot;animation&quot;:&quot;none&quot;}\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-9ecbed2 elementor-widget elementor-widget-heading\" data-id=\"9ecbed2\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">What Is the Eccentric Shaft?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-22322d8 elementor-widget elementor-widget-text-editor\" data-id=\"22322d8\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>The <strong>eccentric shaft is a vital part of your BMW\u2019s Valvetronic system<\/strong>, responsible for adjusting the lift of the intake valves without using a traditional throttle body.<\/p><p>As the eccentric shaft rotates, it changes the position of intermediate rocker arms, controlling how much the intake valves open \u2014 which <b>directly affects engine airflow, fuel economy, emissions, and throttle response.<\/b><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-36f1114 elementor-reverse-mobile elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"36f1114\" data-element_type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;,&quot;_ha_eqh_enable&quot;:false}\">\n\t\t\t\t\t\t\t<div class=\"elementor-background-overlay\"><\/div>\n\t\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-338be5c\" data-id=\"338be5c\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-082dbe5 elementor-widget elementor-widget-video\" data-id=\"082dbe5\" data-element_type=\"widget\" data-settings=\"{&quot;video_type&quot;:&quot;hosted&quot;,&quot;mute&quot;:&quot;yes&quot;,&quot;controls&quot;:&quot;yes&quot;}\" data-widget_type=\"video.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"e-hosted-video elementor-wrapper elementor-open-inline\">\n\t\t\t\t\t<video class=\"elementor-video\" src=\"https:\/\/www.cgmotorsports.com\/wp-content\/uploads\/2025\/07\/CG-Motorsports-essentric-camshaft-in-BMW.mp4\" controls=\"\" preload=\"metadata\" muted=\"muted\" controlsList=\"nodownload\"><\/video>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-3bd4837\" data-id=\"3bd4837\" data-element_type=\"column\" data-settings=\"{&quot;animation&quot;:&quot;none&quot;}\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-ea729dc elementor-widget elementor-widget-heading\" data-id=\"ea729dc\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">What Causes the Eccentric Shaft to Fail?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3d7a5dd elementor-widget elementor-widget-text-editor\" data-id=\"3d7a5dd\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>While the <strong>eccentric shaft sensor (actuator)<\/strong> often fails first, it\u2019s important to know that the<strong> eccentric shaft itself can wear out or seize over time<\/strong>, particularly if sensor failures are ignored or if routine maintenance is neglected.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-0ceaec2 e-con-full e-flex e-con e-child\" data-id=\"0ceaec2\" data-element_type=\"container\" data-settings=\"{&quot;_ha_eqh_enable&quot;:false}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-a9ba890 elementor-widget elementor-widget-heading\" data-id=\"a9ba890\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h4 class=\"elementor-heading-title elementor-size-default\">Common causes of eccentric shaft failure include:<\/h4>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-723b41a elementor-icon-list--layout-traditional elementor-list-item-link-full_width elementor-widget elementor-widget-icon-list\" data-id=\"723b41a\" data-element_type=\"widget\" data-widget_type=\"icon-list.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<ul class=\"elementor-icon-list-items\">\n\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<i aria-hidden=\"true\" class=\"lnr lnr-alarm\"><\/i>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Lack of lubrication due to oil sludge or poor oil change habits<\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<i aria-hidden=\"true\" class=\"lnr lnr-alarm\"><\/i>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Wear on the shaft bearings or journals<\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<i aria-hidden=\"true\" class=\"lnr lnr-alarm\"><\/i>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Prolonged operation with a failed actuator or Valvetronic motor<\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<i aria-hidden=\"true\" class=\"lnr lnr-alarm\"><\/i>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Overheating and oil contamination inside the cylinder head<\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<i aria-hidden=\"true\" class=\"lnr lnr-alarm\"><\/i>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Physical damage from broken components in the Valvetronic system<\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t<\/ul>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-a243ad6 e-con-full e-flex e-con e-child\" data-id=\"a243ad6\" data-element_type=\"container\" data-settings=\"{&quot;_ha_eqh_enable&quot;:false}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-6ed5a78 elementor-widget elementor-widget-text-editor\" data-id=\"6ed5a78\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>In rare cases, a seizing eccentric shaft can cause stress on the Valvetronic motor, break related components, and even result in a fault in the<strong> DME (engine control module).<\/strong><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t<div class=\"elementor-element elementor-element-da0679a e-flex e-con-boxed e-con e-parent\" data-id=\"da0679a\" data-element_type=\"container\" data-settings=\"{&quot;_ha_eqh_enable&quot;:false}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-a9b10b9 elementor-widget elementor-widget-heading\" data-id=\"a9b10b9\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Which BMW Models Are Affected by Eccentric Shaft Issues? <\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-83b5bde elementor-widget elementor-widget-text-editor\" data-id=\"83b5bde\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Eccentric shaft issues are common in BMW models equipped with <strong>Valvetronic engines<\/strong> \u2014 particularly those built between <strong>2006 and 2016<\/strong>, including:<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-84d55ee e-grid e-con-full e-con e-child\" data-id=\"84d55ee\" data-element_type=\"container\" data-settings=\"{&quot;_ha_eqh_enable&quot;:false}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-29dfe17 elementor-widget elementor-widget-text-editor\" data-id=\"29dfe17\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<ol><li>BMW 1 Series (E82\/E88): 2008\u20132013<\/li><li>BMW 3 Series (E90\/E91\/E92\/E93\/E90-93\/F): 2006\u20132013<\/li><li>BMW 5 Series (E60\/E61\/F): 2006\u20132010<\/li><li>BMW X1 (E84): 2010\u20132015<\/li><li>BMW X3 (E83\/E70): 2007\u20132014<\/li><li>BMW X5 (E70): 2007\u20132013<\/li><li>BMW Z4 (E85\/E89): 2006\u20132016<\/li><li>BMW M2\/M3\/M4 (F): 2014-2016<\/li><\/ol>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-09f2267 elementor-widget elementor-widget-image\" data-id=\"09f2267\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"480\" height=\"360\" src=\"https:\/\/www.cgmotorsports.com\/wp-content\/uploads\/2022\/09\/20230218_121250-480x360-1.jpg\" class=\"attachment-large size-large wp-image-8575\" alt=\"\" srcset=\"https:\/\/www.cgmotorsports.com\/wp-content\/uploads\/2022\/09\/20230218_121250-480x360-1.jpg 480w, https:\/\/www.cgmotorsports.com\/wp-content\/uploads\/2022\/09\/20230218_121250-480x360-1-300x225.jpg 300w\" sizes=\"(max-width: 480px) 100vw, 480px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-ab2cf82 e-con-full e-flex e-con e-child\" data-id=\"ab2cf82\" data-element_type=\"container\" data-settings=\"{&quot;_ha_eqh_enable&quot;:false}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-4d7bdce elementor-widget elementor-widget-text-editor\" data-id=\"4d7bdce\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>If your BMW uses an<strong> N52, N54, N55, S55, or similar Valvetronic-equipped engine,<\/strong> you should be especially aware of eccentric shaft issues.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-9472bf4 e-flex e-con-boxed e-con e-parent\" data-id=\"9472bf4\" data-element_type=\"container\" data-settings=\"{&quot;_ha_eqh_enable&quot;:false}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-a31cd0e elementor-widget elementor-widget-heading\" data-id=\"a31cd0e\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Common Symptoms of Eccentric Shaft Failure<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3a8c581 elementor-widget elementor-widget-text-editor\" data-id=\"3a8c581\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Since the eccentric shaft is directly involved in controlling intake valve operation, problems can quickly affect your engine\u2019s performance.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-c45188b e-con-full e-flex e-con e-child\" data-id=\"c45188b\" data-element_type=\"container\" data-settings=\"{&quot;_ha_eqh_enable&quot;:false}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-2d6901a elementor-widget elementor-widget-heading\" data-id=\"2d6901a\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h4 class=\"elementor-heading-title elementor-size-default\">Watch for these symptoms:<\/h4>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-25b21d9 elementor-icon-list--layout-traditional elementor-list-item-link-full_width elementor-widget elementor-widget-icon-list\" data-id=\"25b21d9\" data-element_type=\"widget\" data-widget_type=\"icon-list.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<ul class=\"elementor-icon-list-items\">\n\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<i aria-hidden=\"true\" class=\"icon icon-warning\"><\/i>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Rough idle or stalling<\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<i aria-hidden=\"true\" class=\"icon icon-warning\"><\/i>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Reduced engine power (limp mode)<\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<i aria-hidden=\"true\" class=\"icon icon-warning\"><\/i>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Long crank times or difficulty starting<\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<i aria-hidden=\"true\" class=\"icon icon-warning\"><\/i>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Erratic throttle response<\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<i aria-hidden=\"true\" class=\"icon icon-warning\"><\/i>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Check Engine Light (CEL) illuminated<\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<i aria-hidden=\"true\" class=\"icon icon-warning\"><\/i>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Valvetronic motor noises or mechanical rattling<\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<i aria-hidden=\"true\" class=\"icon icon-warning\"><\/i>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Multiple Valvetronic or eccentric shaft fault codes (when scanned)<\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t<\/ul>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-e3284b1 e-flex e-con-boxed e-con e-parent\" data-id=\"e3284b1\" data-element_type=\"container\" data-settings=\"{&quot;_ha_eqh_enable&quot;:false}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-ac3306e elementor-widget elementor-widget-heading\" data-id=\"ac3306e\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Why Prompt Inspection Matters<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-e0f9b95 e-con-full e-flex e-con e-child\" data-id=\"e0f9b95\" data-element_type=\"container\" data-settings=\"{&quot;_ha_eqh_enable&quot;:false}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-8a3d151 elementor-widget elementor-widget-heading\" data-id=\"8a3d151\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h4 class=\"elementor-heading-title elementor-size-default\">If your BMW shows any of these symptoms, don\u2019t ignore it. Driving with a failing eccentric shaft can cause:<\/h4>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-fd7874e elementor-icon-list--layout-traditional elementor-list-item-link-full_width elementor-widget elementor-widget-icon-list\" data-id=\"fd7874e\" data-element_type=\"widget\" data-widget_type=\"icon-list.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<ul class=\"elementor-icon-list-items\">\n\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<i aria-hidden=\"true\" class=\"icon icon-chevron-right-circle\"><\/i>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Misadjusted valve lift and poor engine operation<\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<i aria-hidden=\"true\" class=\"icon icon-chevron-right-circle\"><\/i>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Increased wear on the Valvetronic motor, eccentric shaft sensor, and intake components<\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<i aria-hidden=\"true\" class=\"icon icon-chevron-right-circle\"><\/i>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Serious engine damage caused by a potentially seized eccentric shaft <\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<i aria-hidden=\"true\" class=\"icon icon-chevron-right-circle\"><\/i>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Critical harm to the DME (engine control module) in rare cases<\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t<\/ul>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-c9f8975 e-con-full e-flex e-con e-child\" data-id=\"c9f8975\" data-element_type=\"container\" data-settings=\"{&quot;_ha_eqh_enable&quot;:false}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-682f3a9 elementor-widget elementor-widget-heading\" data-id=\"682f3a9\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h4 class=\"elementor-heading-title elementor-size-default\">Recommended action:<\/h4>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-19bf597 elementor-widget elementor-widget-text-editor\" data-id=\"19bf597\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>The only way to accurately diagnose eccentric shaft issues is to <strong>remove the valve cover and physically inspect<\/strong> the shaft, bearings, and Valvetronic system.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-1e9a22b e-grid e-con-full e-con e-child\" data-id=\"1e9a22b\" data-element_type=\"container\" data-settings=\"{&quot;_ha_eqh_enable&quot;:false}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-70d559b elementor-hidden-mobile elementor-widget elementor-widget-image\" data-id=\"70d559b\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"768\" height=\"1024\" src=\"https:\/\/www.cgmotorsports.com\/wp-content\/uploads\/2025\/07\/IMG-20250306-WA0006-768x1024.jpg\" class=\"attachment-large size-large wp-image-11758\" alt=\"BMW Valvetronic Eccentric Shaft Experts at CG Motorsports\" srcset=\"https:\/\/www.cgmotorsports.com\/wp-content\/uploads\/2025\/07\/IMG-20250306-WA0006-768x1024.jpg 768w, https:\/\/www.cgmotorsports.com\/wp-content\/uploads\/2025\/07\/IMG-20250306-WA0006-225x300.jpg 225w, https:\/\/www.cgmotorsports.com\/wp-content\/uploads\/2025\/07\/IMG-20250306-WA0006-1152x1536.jpg 1152w, https:\/\/www.cgmotorsports.com\/wp-content\/uploads\/2025\/07\/IMG-20250306-WA0006.jpg 1536w\" sizes=\"(max-width: 768px) 100vw, 768px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-9e6447e elementor-widget elementor-widget-image\" data-id=\"9e6447e\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"768\" height=\"1024\" src=\"https:\/\/www.cgmotorsports.com\/wp-content\/uploads\/2025\/07\/IMG-20250306-WA0003-768x1024.jpg\" class=\"attachment-large size-large wp-image-11756\" alt=\"BMW Valvetronic Eccentric Shaft Experts at CG Motorsports\" srcset=\"https:\/\/www.cgmotorsports.com\/wp-content\/uploads\/2025\/07\/IMG-20250306-WA0003-768x1024.jpg 768w, https:\/\/www.cgmotorsports.com\/wp-content\/uploads\/2025\/07\/IMG-20250306-WA0003-225x300.jpg 225w, https:\/\/www.cgmotorsports.com\/wp-content\/uploads\/2025\/07\/IMG-20250306-WA0003-1152x1536.jpg 1152w, https:\/\/www.cgmotorsports.com\/wp-content\/uploads\/2025\/07\/IMG-20250306-WA0003.jpg 1536w\" sizes=\"(max-width: 768px) 100vw, 768px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0f22952 elementor-widget elementor-widget-image\" data-id=\"0f22952\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"768\" height=\"1024\" src=\"https:\/\/www.cgmotorsports.com\/wp-content\/uploads\/2025\/07\/IMG-20250306-WA0007-768x1024.jpg\" class=\"attachment-large size-large wp-image-11759\" alt=\"BMW Valvetronic Eccentric Shaft Experts at CG Motorsports\" srcset=\"https:\/\/www.cgmotorsports.com\/wp-content\/uploads\/2025\/07\/IMG-20250306-WA0007-768x1024.jpg 768w, https:\/\/www.cgmotorsports.com\/wp-content\/uploads\/2025\/07\/IMG-20250306-WA0007-225x300.jpg 225w, https:\/\/www.cgmotorsports.com\/wp-content\/uploads\/2025\/07\/IMG-20250306-WA0007-1152x1536.jpg 1152w, https:\/\/www.cgmotorsports.com\/wp-content\/uploads\/2025\/07\/IMG-20250306-WA0007.jpg 1536w\" sizes=\"(max-width: 768px) 100vw, 768px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-2c0df9b7 e-flex e-con-boxed e-con e-parent\" data-id=\"2c0df9b7\" data-element_type=\"container\" data-settings=\"{&quot;_ha_eqh_enable&quot;:false}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-720d24c elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"720d24c\" data-element_type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-65eb1cbc elementor-widget elementor-widget-text-editor\" data-id=\"65eb1cbc\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h3>Book Your BMW Service with CG Motorsports<\/h3><p>If your BMW is showing signs of engine hesitation, rough idle, or Valvetronic-related fault codes \u2014 don\u2019t wait. Early inspection and maintenance can mean the difference between a minor repair and a full cylinder head teardown.<\/p><p>At CG Motorsports, our certified BMW technicians have extensive experience diagnosing and repairing eccentric shaft issues on all Valvetronic-equipped models.<\/p><p><a href=\"https:\/\/www.cgmotorsports.com\/contact\/\">Book your diagnostic today<\/a> and protect your BMW\u2019s performance and longevity.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f2dec8f elementor-widget elementor-widget-spacer\" data-id=\"f2dec8f\" data-element_type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-7a3a38c4 e-flex e-con-boxed e-con e-parent\" data-id=\"7a3a38c4\" data-element_type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;,&quot;_ha_eqh_enable&quot;:false}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-5c468842 elementor-align-center elementor-icon-list--layout-traditional elementor-list-item-link-full_width elementor-widget elementor-widget-icon-list\" data-id=\"5c468842\" data-element_type=\"widget\" data-widget_type=\"icon-list.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<ul class=\"elementor-icon-list-items\">\n\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"tel:(604)%20275-6638\">\n\n\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-mobile-alt\" viewBox=\"0 0 320 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M272 0H48C21.5 0 0 21.5 0 48v416c0 26.5 21.5 48 48 48h224c26.5 0 48-21.5 48-48V48c0-26.5-21.5-48-48-48zM160 480c-17.7 0-32-14.3-32-32s14.3-32 32-32 32 14.3 32 32-14.3 32-32 32zm112-108c0 6.6-5.4 12-12 12H60c-6.6 0-12-5.4-12-12V60c0-6.6 5.4-12 12-12h200c6.6 0 12 5.4 12 12v312z\"><\/path><\/svg>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">(604) 275-6638<\/span>\n\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t<\/ul>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-194b1717 e-flex e-con-boxed e-con e-parent\" data-id=\"194b1717\" data-element_type=\"container\" data-settings=\"{&quot;_ha_eqh_enable&quot;:false}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-323e133f elementor-widget elementor-widget-heading\" data-id=\"323e133f\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Related Post<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-16adeab5 elementor-grid-eael-col-3 elementor-grid-tablet-eael-col-2 elementor-grid-mobile-eael-col-1 elementor-widget elementor-widget-eael-post-grid\" data-id=\"16adeab5\" data-element_type=\"widget\" data-settings=\"{&quot;eael_post_grid_columns&quot;:&quot;eael-col-3&quot;,&quot;eael_post_grid_columns_tablet&quot;:&quot;eael-col-2&quot;,&quot;eael_post_grid_columns_mobile&quot;:&quot;eael-col-1&quot;}\" data-widget_type=\"eael-post-grid.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div id=\"eael-post-grid-16adeab5\" class=\"eael-post-grid-container\">\n            <div class=\"eael-post-grid eael-post-appender eael-post-appender-16adeab5 eael-post-grid-style-one\" data-layout-mode=\"grid\"><article class=\"eael-grid-post  eael-post-grid-column eael-pg-post-13055 category-featured-tech-tips tags-bmw-diff-rebuild-near-me-bmw-differential-noise-repair-bmw-differential-rebuilding-service-bmw-differential-repair-specialists-bmw-drivetrain-repair-experts-bmw-limited-slip-differential-rebuild-bmw-performance-differential-service-bmw-rear-differential-rebuild-cg-motorsports-bmw-differential-service-differential-overhaul-professionals\" data-id=\"13055\">\n        <div class=\"eael-grid-post-holder\">\n            <div class=\"eael-grid-post-holder-inner\"><div class=\"eael-entry-media\"><div class=\"eael-entry-overlay fade-in\"><i class=\"fas fa-long-arrow-alt-right\" aria-hidden=\"true\"><\/i><a href=\"https:\/\/www.cgmotorsports.com\/bmw-differential-rebuilding-now-available-at-cg-motorsports\/\"><\/a><\/div><div class=\"eael-entry-thumbnail \">\n                <img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"298\" src=\"https:\/\/www.cgmotorsports.com\/wp-content\/uploads\/2026\/01\/BMW-X7-Inspection-300x298.png\" class=\"attachment-medium size-medium wp-image-13116\" alt=\"Contact Us CG Motorsports for expert performance upgrades, service inquiries, or appointments. Call (604) 275-6638 or reach us online today.\" srcset=\"https:\/\/www.cgmotorsports.com\/wp-content\/uploads\/2026\/01\/BMW-X7-Inspection-300x298.png 300w, https:\/\/www.cgmotorsports.com\/wp-content\/uploads\/2026\/01\/BMW-X7-Inspection-150x150.png 150w, https:\/\/www.cgmotorsports.com\/wp-content\/uploads\/2026\/01\/BMW-X7-Inspection.png 713w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/>\n            <\/div>\n        <\/div><div class=\"eael-entry-wrapper\"><header class=\"eael-entry-header\"><h2 class=\"eael-entry-title\"><a class=\"eael-grid-post-link\" href=\"https:\/\/www.cgmotorsports.com\/bmw-differential-rebuilding-now-available-at-cg-motorsports\/\" title=\"BMW Differential Rebuilding Now Available at CG Motorsports\">BMW Differential Rebuilding Now Available at CG Motorsports<\/a><\/h2><\/header><div class=\"eael-entry-content\">\n                        <div class=\"eael-grid-post-excerpt\"><a 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Leaks: What You Need to Know\">BMW Coolant Leaks: What You Need to Know<\/a><\/h2><\/header><div class=\"eael-entry-content\">\n                        <div class=\"eael-grid-post-excerpt\"><a href=\"https:\/\/www.cgmotorsports.com\/bmw-coolant-leaks-what-you-need-to-know\/\" class=\"eael-post-elements-readmore-btn\">Read More<\/a><\/div>\n                    <\/div><\/div><\/div>\n        <\/div>\n    <\/article><\/div>\n            <div class=\"clearfix\"><\/div>\n        <\/div>            <div class=\"eael-load-more-button-wrap eael-force-hide\">\n                <button class=\"eael-load-more-button\" id=\"eael-load-more-btn-16adeab5\" data-widget-id=\"16adeab5\" data-widget=\"16adeab5\" data-page-id=\"11743\" data-template=\"{&quot;dir&quot;:&quot;lite&quot;,&quot;file_name&quot;:&quot;one.php&quot;,&quot;name&quot;:&quot;Post-Grid&quot;}\" data-class=\"Essential_Addons_Elementor\\Elements\\Post_Grid\" data-layout=\"grid\" data-page=\"1\" data-args=\"orderby=date&amp;order=desc&amp;ignore_sticky_posts=1&amp;post_status=publish&amp;posts_per_page=3&amp;offset=0&amp;post_type=post&amp;tax_query%5B0%5D%5Btaxonomy%5D=category&amp;tax_query%5B0%5D%5Bfield%5D=term_id&amp;tax_query%5B0%5D%5Bterms%5D%5B0%5D=9&amp;tax_query%5Brelation%5D=AND\" data-max-page=\"4\">\n                    <span class=\"eael-btn-loader button__loader\"><\/span>\n                    <span class=\"eael_load_more_text\">Load More<\/span>\n                <\/button>\n            <\/div>\n            \t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Understanding Eccentric Shaft Failure: Quick Guide for BMW Owners BMW\u2019s Valvetronic system is one of the most advanced variable valve timing technologies in the industry \u2014 but it comes with its own unique weak points. One of the most important components in this system is the eccentric shaft. And when it fails, it can lead [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":11759,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"elementor_header_footer","format":"standard","meta":{"footnotes":""},"categories":[3,4,9],"tags":[],"class_list":["post-11743","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-clients","category-featured","category-tech-tips"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.1.1 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>BMW Valvetronic Eccentric Shaft: How It Works &amp; Why It Fails<\/title>\n<meta name=\"description\" content=\"Learn what the eccentric shaft does in your BMW\u2019s Valvetronic system, how it fails, warning signs to look for, and why early repair matters for your engine\u2019s health.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" 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