{"id":1605,"date":"2016-05-27T07:32:50","date_gmt":"2016-05-27T07:32:50","guid":{"rendered":"https:\/\/www.engines4sale.co.uk\/blog\/?p=1605"},"modified":"2019-04-01T10:08:03","modified_gmt":"2019-04-01T10:08:03","slug":"common-causes-engine-knocking","status":"publish","type":"post","link":"https:\/\/www.engines4sale.co.uk\/blog\/common-causes-engine-knocking\/","title":{"rendered":"Common Causes of Engine Knocking"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_87 counter-hierarchy ez-toc-counter ez-toc-white ez-toc-container-direction\">\r\n<div class=\"ez-toc-title-container\">\r\n<p class=\"ez-toc-title\" style=\"cursor:inherit\"><\/p>\r\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\r\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.engines4sale.co.uk\/blog\/common-causes-engine-knocking\/#Know_about_Engine_knocking_Sound_until_its_too_late_to_figure_it_out\" >Know about Engine knocking Sound until it\u2019s too late to figure it out!<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.engines4sale.co.uk\/blog\/common-causes-engine-knocking\/#Irregularities_in_Combustion_Process\" >Irregularities in Combustion Process<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.engines4sale.co.uk\/blog\/common-causes-engine-knocking\/#Air_to_fuel_Mixture_Cause\" >Air to fuel Mixture Cause<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.engines4sale.co.uk\/blog\/common-causes-engine-knocking\/#Exhaust_Gas_Recirculation_EGR_Cause\" >Exhaust Gas Recirculation (EGR) Cause<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.engines4sale.co.uk\/blog\/common-causes-engine-knocking\/#Pistons_to_Crankshaft_Rotation_Cause\" >Pistons to Crankshaft Rotation Cause<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.engines4sale.co.uk\/blog\/common-causes-engine-knocking\/#Other_Common_Cause_of_Engine_Knocking\" >Other Common Cause of Engine Knocking<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.engines4sale.co.uk\/blog\/common-causes-engine-knocking\/#Final_Thoughts\" >Final Thoughts<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\r\n<h2><span class=\"ez-toc-section\" id=\"Know_about_Engine_knocking_Sound_until_its_too_late_to_figure_it_out\"><\/span>Know about Engine knocking Sound until it\u2019s too late to figure it out!<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>You may faced or likely to face various <span style=\"color: #0000ff\"><a style=\"color: #0000ff\" href=\"https:\/\/www.engines4sale.co.uk\/\"><strong>engine problems<\/strong><\/a><\/span> but engine knocking is one of the common Problem among all these Engine\u00a0related problems. This blog addresses a\u00a0common problem of engine knocking. There are following common reasons of engine knocking.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Irregularities_in_Combustion_Process\"><\/span><strong>Irregularities in Combustion Process<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>It is important to note that engine can produce knocking because of the\u00a0improper combustion process. If combustion occurs too early, it may produce spark knocking. The carbon buildup inside the walls of a\u00a0combustion chamber is a common cause of early combustion and as a result of it, spark knocking occurs.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Air_to_fuel_Mixture_Cause\"><\/span><strong>Air to fuel Mixture Cause<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>When an engine is unevenly hot, it can disturb air-to-fuel mixture. The mixture explodes continuously because of the <a href=\"http:\/\/www.wikihow.com\/Diagnose-a-Cooling-System-Problem\"><strong>problem in engine cooling system<\/strong><\/a> and as a result of it, pre-ignition occurs. An engine produces knocking because of turbulences in the air-to-fuel mixture.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Exhaust_Gas_Recirculation_EGR_Cause\"><\/span><strong>Exhaust Gas Recirculation (EGR) Cause<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>EGR system is being used to add some amount of exhaust in air-to-fuel mixture going a\u00a0combustion chamber. It helps to reduce engine knocking but if EGR system is not functioning properly, drivers observe engine knocking.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Pistons_to_Crankshaft_Rotation_Cause\"><\/span><strong>Pistons to Crankshaft Rotation Cause<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>It is important to understand that Piston to a\u00a0crank rotation is part and parcel for the <a href=\"https:\/\/www.engines4sale.co.uk\/blog\/top-10-fuel-efficiency-myths-busted\/\"><strong>continuous running of an engine<\/strong><\/a>. However, both the parts are metal and when they collide for downward movements it produces knock. It is also called rod knocking because it is because of one metal hitting to another metal. The \u201crods knock\u201d increases with engine speed and load.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Other_Common_Cause_of_Engine_Knocking\"><\/span><strong>Other Common Cause of Engine Knocking<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ol>\n<li>Malfunctioning or defects in crankshaft bearings<\/li>\n<li>A broken or damaged flywheel, it attaches the\u00a0engine to the transmission.<\/li>\n<li>A loose timing belt tensioner can a cause of engine knocking because when belt slaps against it produces knocking.\n<\/li>\n<li>A worn water pump bearing is also one of the common causes of engine knocking.<\/li>\n<li>An Air conditioner compressor can create engine knocking when it has been iced up or failing.<\/li>\n<li>An alternator with worn rotor bearings can also cause engine knocking\u00a0although it\u2019s a least common cause. However, it can\u2019t be neglected to determine engine knocking causes.<\/li>\n<\/ol>\n<h3><span class=\"ez-toc-section\" id=\"Final_Thoughts\"><\/span><strong>Final Thoughts<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>In fact, it\u2019s tricky to highlight root cause of the engine knocking sound at a first glance. However, above mentioned causes are quite common. The blog helps you to understand common causes of engine knocking. You don\u2019t necessarily need to be an engine expert to address these issues but professional help can be quite useful to get rid of engine knocking once for all.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Know about Engine knocking Sound until it\u2019s too late to figure it out! You may faced or likely to face various engine problems but engine knocking is one of the common Problem among all these Engine\u00a0related problems. This blog addresses a\u00a0common problem of engine knocking. There are following common reasons of engine knocking. Irregularities in [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":1606,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7],"tags":[511,515,513,512,514,475],"_links":{"self":[{"href":"https:\/\/www.engines4sale.co.uk\/blog\/wp-json\/wp\/v2\/posts\/1605"}],"collection":[{"href":"https:\/\/www.engines4sale.co.uk\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.engines4sale.co.uk\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.engines4sale.co.uk\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.engines4sale.co.uk\/blog\/wp-json\/wp\/v2\/comments?post=1605"}],"version-history":[{"count":3,"href":"https:\/\/www.engines4sale.co.uk\/blog\/wp-json\/wp\/v2\/posts\/1605\/revisions"}],"predecessor-version":[{"id":2699,"href":"https:\/\/www.engines4sale.co.uk\/blog\/wp-json\/wp\/v2\/posts\/1605\/revisions\/2699"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.engines4sale.co.uk\/blog\/wp-json\/wp\/v2\/media\/1606"}],"wp:attachment":[{"href":"https:\/\/www.engines4sale.co.uk\/blog\/wp-json\/wp\/v2\/media?parent=1605"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.engines4sale.co.uk\/blog\/wp-json\/wp\/v2\/categories?post=1605"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.engines4sale.co.uk\/blog\/wp-json\/wp\/v2\/tags?post=1605"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}