{"id":139680,"date":"2025-05-07T19:30:38","date_gmt":"2025-05-08T02:30:38","guid":{"rendered":"https:\/\/blogv2prod.wpenginepowered.com\/blog\/?p=139680"},"modified":"2025-08-07T19:37:28","modified_gmt":"2025-08-08T02:37:28","slug":"why-is-smoke-coming-from-my-engine","status":"publish","type":"post","link":"https:\/\/www.carparts.com\/blog\/why-is-smoke-coming-from-my-engine\/","title":{"rendered":"Why Is Smoke Coming From My Engine?"},"content":{"rendered":"<!DOCTYPE html PUBLIC \"-\/\/W3C\/\/DTD HTML 4.0 Transitional\/\/EN\" \"http:\/\/www.w3.org\/TR\/REC-html40\/loose.dtd\">\n<html><body><span class=\"span-reading-time rt-reading-time\" style=\"display: block;\"><span class=\"rt-label rt-prefix\">Reading Time: <\/span> <span class=\"rt-time\"> 4<\/span> <span class=\"rt-label rt-postfix\">minutes<\/span><\/span><style>.kadence-column139680_ed516e-ae > .kt-inside-inner-col,.kadence-column139680_ed516e-ae > .kt-inside-inner-col:before{border-top-left-radius:0px;border-top-right-radius:0px;border-bottom-right-radius:0px;border-bottom-left-radius:0px;}.kadence-column139680_ed516e-ae > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column139680_ed516e-ae > .kt-inside-inner-col{flex-direction:column;}.kadence-column139680_ed516e-ae > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column139680_ed516e-ae > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column139680_ed516e-ae{position:relative;}@media all and (max-width: 1024px){.kadence-column139680_ed516e-ae > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column139680_ed516e-ae > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column139680_ed516e-ae inner-column-1 qk-look-widget\"><div class=\"kt-inside-inner-col\">\n<div class=\"wp-block-ultimate-post-row ultp-block-33a935  qk-main-wrap\"><div class=\"ultp-row-wrapper\"><div class=\"ultp-row-content\">\n<div class=\"wp-block-ultimate-post-column ultp-block-ffab6f\"><div class=\"ultp-column-wrapper\"><style>.wp-block-kadence-advancedheading.kt-adv-heading139680_5f439d-f5, .wp-block-kadence-advancedheading.kt-adv-heading139680_5f439d-f5[data-kb-block=\"kb-adv-heading139680_5f439d-f5\"]{text-align:center;font-size:20px;font-style:normal;}.wp-block-kadence-advancedheading.kt-adv-heading139680_5f439d-f5 mark.kt-highlight, .wp-block-kadence-advancedheading.kt-adv-heading139680_5f439d-f5[data-kb-block=\"kb-adv-heading139680_5f439d-f5\"] mark.kt-highlight{font-family:Inter;font-weight:500;font-style:normal;color:#f76a0c;-webkit-box-decoration-break:clone;box-decoration-break:clone;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px;}.wp-block-kadence-advancedheading.kt-adv-heading139680_5f439d-f5 img.kb-inline-image, .wp-block-kadence-advancedheading.kt-adv-heading139680_5f439d-f5[data-kb-block=\"kb-adv-heading139680_5f439d-f5\"] img.kb-inline-image{width:150px;vertical-align:baseline;}<\/style>\n<div class=\"kt-adv-heading139680_5f439d-f5 summary-title wp-block-kadence-advancedheading\" data-kb-block=\"kb-adv-heading139680_5f439d-f5\"><span>Summary<\/span><\/div>\n\n\n\n<ul class=\"wp-block-list\">\n<li>If there&rsquo;s an oil leak in the engine, or if there is a transmission or power steering fluid leak making its way to the hot manifold, the smoke will be blue.<\/li>\n\n\n\n<li>If there&rsquo;s white smoke coming from the engine, there&rsquo;s likely a coolant leak from a coolant hose, the radiator, or some plastic part of the cooling system that has split or cracked and allowed coolant to escape.<\/li>\n\n\n\n<li>It&rsquo;s not a good idea to drive a vehicle with a smoking engine because it could lead to engine damage.<\/li>\n<\/ul>\n<\/div><\/div>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n\n\n<p>More often than not, a smoking <a href=\"https:\/\/www.carparts.com\/engine-and-transmission-assemblies\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"engine\">engine<\/a> can point to two major problems: a leak in the engine or too much friction caused by moving engine parts.&nbsp;<\/p>\n\n\n\n<p>Either way, smoke is a sign that there&rsquo;s a serious problem that needs to be addressed immediately. Otherwise, you run the risk of your <a href=\"https:\/\/www.carparts.com\/blog\/what-type-of-damage-to-expect-from-an-overheating-car\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"engine overheating\">engine overheating<\/a> and getting damaged.&nbsp;<\/p>\n\n\n\n<p>Because of this, it&rsquo;s a good idea to familiarize yourself with the meaning of different smoke colors, the most common causes, and whether it&rsquo;s possible to drive with a smoking engine.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Does the Color of Engine Smoke Matter?<\/h2>\n\n\n\n<p>Yes, smoke color matters because it can help you pinpoint what&rsquo;s causing the issue.&nbsp;<\/p>\n\n\n\n<p>Blue smoke is oil, white smoke\/steam is coolant or water, and black smoke means the vehicle is running too rich.<\/p>\n\n\n\n<p>The smell of the smoke can also be a good clue as to what is causing it. The place where the smoke is coming from is another clue. If it&rsquo;s coming from the tailpipe, it&rsquo;s the product of something that is happening inside the engine. If it&rsquo;s coming from under the hood, well, that&rsquo;s a different issue.<\/p>\n\n\n\n<p>If the smoke is coming from the engine compartment, it will either be due to hot <a href=\"https:\/\/www.carparts.com\/coolant-antifreeze\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"coolant\">coolant<\/a> coming from a hose and\/or making contact with the <a href=\"https:\/\/www.carparts.com\/exhaust-manifold\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"exhaust manifold\">exhaust manifold<\/a>, or it will be some kind of oil or fluid that finds its way to that very hot part of the engine.&nbsp;<\/p>\n\n\n\n<p>Smoke from under the hood can also be due to electrical issues or even fires that start<strong><em>.<\/em><\/strong><\/p>\n\n\n\n<p><em><strong>Caution:<\/strong> If there is a lot of smoke escaping from the edges of the hood, be careful opening it because you may find a roaring flame in the engine compartment due to oil or fuel leaking onto the exhaust.<\/em><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"559\" src=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2025\/05\/smoke-coming-from-truck-engine-1024x559.jpg\" alt=\"smoke coming from a truck's engine\" class=\"wp-image-180565\"><figcaption class=\"wp-element-caption\">Smoke coming from a truck&rsquo;s engine. | Image Source: Richard McCuistian, Generated using AI<\/figcaption><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">Blue Smoke<\/h3>\n\n\n\n<p>Typically, if there&rsquo;s an <a href=\"https:\/\/www.carparts.com\/blog\/tips-on-how-to-find-an-oil-leak\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"oil leak\">oil leak<\/a> in the engine, or if there is a transmission or <a href=\"https:\/\/www.carparts.com\/power-steering-fluid\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"power steering fluid\">power steering fluid<\/a> leak making its way to the hot manifold, the smoke will be blue.<\/p>\n\n\n\n<p>When any kind of oil leaks onto hot engine components, it makes blue smoke that smells like burning oil, and different types of oil will have different smells.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">White Smoke<\/h3>\n\n\n\n<p>If there&rsquo;s white smoke coming from the engine, there&rsquo;s likely a <a href=\"https:\/\/www.carparts.com\/blog\/coolant-leak-symptoms-plus-faq\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"coolant leak\">coolant leak<\/a> from a coolant hose, the radiator, or some plastic part of the cooling system that has split or cracked and allowed coolant to escape. When the coolant burns, it creates a sweet-smelling white smoke.<\/p>\n\n\n\n<div id=\"article-search-widget\">\n<div class=\"cp-search\">\n<div align=\"center\">\n<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/cld.partsimg.com\/image\/upload\/w_auto,dpr_auto\/carparts\/blog\/wordpress_assets\/CP_LOGO_COLOUR_RGB_Blue\" alt=\"CarParts.com\" width=\"300\" height=\"56\">\n<\/div>\n<form id=\"cpsearchform\" name=\"cpsearchform\" action=\"https:\/\/www.carparts.com\/search\" method=\"get\" target=\"_blank\" accept-charset=\"character_set\" aria-label=\"search CarParts.com\">\n    <input type=\"text\" class=\"keyword\" name=\"q\" placeholder=\"Search for parts on CarParts.com\" value=\"\" aria-label=\"Search CarParts.com\"><input type=\"submit\" class=\"btn-search\" value=\"Search\" aria-label=\"Search\">\n<\/form>\n<\/div>\n<\/div>\n\n\n\n\n<h2 class=\"wp-block-heading\">Common Causes of Smoking Engines<\/h2>\n\n\n\n<p>Keep an eye out for the problems that lead to smoking engines. Some of the most common causes include (but are not limited to) oil and coolant leaks, electrical problems, overheating engines, and burning contaminants.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Oil and Coolant Leaks<\/h3>\n\n\n\n<p>When oil and coolant leak into the engine, they can burn and create smoke when they come in contact with hot components. The color and smell of the smoke depend on what&rsquo;s burned. Address this problem as soon as possible to avoid losing too much motor oil or coolant.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Electrical Problems<\/h3>\n\n\n\n<p>When the <a href=\"https:\/\/www.carparts.com\/wiring-harness\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"wire harnesses\">wire harnesses<\/a> burn, it&rsquo;s usually due to a short circuit or an overheating of wires due to high electrical load such as the cooling fan. When connectors begin to oxidize they develop resistance, which leads to heat and the melting of connectors and wires near the connectors. <a href=\"https:\/\/www.carparts.com\/starter\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Starters\">Starters<\/a> and <a href=\"https:\/\/www.carparts.com\/alternator\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"alternators\">alternators<\/a> can overheat and smoke and even set fire to nearby components; and once the fire starts it causes a lot of damage.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Overheating<\/h3>\n\n\n\n<p>Components such as <a href=\"https:\/\/www.carparts.com\/other-gaskets-and-seals\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"gaskets and seals\">gaskets and seals<\/a> can burn, melt, and become misshapen because of an overheating engine.<\/p>\n\n\n\n<div class=\"pro-tip-widget\">\n\n    <div class=\"pro-tip-item\">\n        <figure class=\"aligncenter size-large\"><img decoding=\"async\" src=\"https:\/\/cld.partsimg.com\/image\/upload\/f_auto,dpr_auto,q_auto,c_pad\/carparts\/blog\/widgets\/protip\/services-icon\" alt=\", P0442 Code: Evaporative Emission Control System Leak Detected (Small Leak)\" class=\"kb-img\"><\/figure>\n    <\/div>\n\n    <div class=\"protip-desc\">\n        <div class=\"help-tip\">\n        <p><strong>Pro Tips<\/strong> are nuggets of information direct from ASE-certified automobile technicians working with CarParts.com, which may include unique, personal insights based on their years of experience working in the automotive industry. These can help you make more informed decisions about your car.<\/p>\n        <\/div>\n        <div class=\"help-caption\">\n            <p>\n                <strong>Pro Tip:<\/strong>\n                The engine itself, even without leaks, can become hot enough to smoke. But by the time you notice the smoke, it&rsquo;s just about always too late. Any kind of liquid on a hot surface will smoke, as will any combustible material that is resting on the top of the engine and might make its way to any component hot enough to cause it to smolder.            <\/p>\n        <\/div>\n    <\/div>\n\n<\/div>\n\n\n\n\n<h2 class=\"wp-block-heading\">Can You Drive With a Smoking Engine?<\/h2>\n\n\n\n<p>Yes, if the issue didn&rsquo;t render your vehicle inoperable, you can technically drive while the engine is smoking. However, that doesn&rsquo;t mean you should, as you run the risk of further damaging your car.<\/p>\n\n\n\n<p>Unless you&rsquo;re confident you can drive to the nearest service center without destroying the engine, it&rsquo;s best to pull over and stop driving as soon as you spot engine smoke. This minimizes the risk of your engine overheating and sustaining permanent, irreparable damage.<\/p>\n\n\n\n<p>You can call roadside assistance or a towing service to bring your vehicle to the nearest mechanic and have them run diagnostics. There&rsquo;s a good chance you&rsquo;ll need to buy replacements for damaged or inoperative engine parts.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What if There&rsquo;s Smoke Coming From the Engine but It&rsquo;s Not Overheating?<\/h2>\n\n\n\n<p>Even if you&rsquo;ve somehow confirmed that the source of the smoke isn&rsquo;t due to overheating, it&rsquo;s a bad idea to drive a vehicle with a smoking engine.<\/p>\n\n\n\n<p>Smoke is a clear indicator that something is burning in your engine, which means a component is likely damaged or even inoperative. It&rsquo;s a good idea to have your vehicle inspected by a professional if smoke comes out of places it shouldn&rsquo;t.<\/p>\n\n\n\n<p><\/p>\n<\/body><\/html>\n","protected":false},"excerpt":{"rendered":"<p><span class=\"span-reading-time rt-reading-time\" style=\"display: block;\"><span class=\"rt-label rt-prefix\">Reading Time: <\/span> <span class=\"rt-time\"> 4<\/span> <span class=\"rt-label rt-postfix\">minutes<\/span><\/span>More often than not, a smoking engine can point to two major problems: a leak in the engine or too&#8230; <a href=\"https:\/\/www.carparts.com\/blog\/why-is-smoke-coming-from-my-engine\/\" rel=\"nofollow\">Read More<\/a><\/p>\n","protected":false},"author":1651,"featured_media":139681,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_genesis_hide_title":false,"_genesis_hide_breadcrumbs":false,"_genesis_hide_singular_image":false,"_genesis_hide_footer_widgets":false,"_genesis_custom_body_class":"","_genesis_custom_post_class":"","_genesis_layout":"","footnotes":""},"categories":[1034,52,3747],"tags":[1669,383,2994],"ppma_author":[2607,2985],"class_list":{"0":"post-139680","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-auto-repair","8":"category-diy","9":"category-engine","10":"tag-coolant-antifreeze-2","11":"tag-engine","12":"tag-motor-oil","13":"entry"},"acf":{"adrotate_specific_mobile_ad":"","adrotate_specific_desktop_ad":""},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Why Is Smoke Coming From My Engine? - In The Garage with CarParts.com<\/title>\n<meta name=\"description\" content=\"Learn why it\u2019s unsafe to drive with a smoking engine, common causes, and why the color of the smoke matters.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.carparts.com\/blog\/why-is-smoke-coming-from-my-engine\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Why Is Smoke Coming From My Engine? - In The Garage with CarParts.com\" \/>\n<meta property=\"og:description\" content=\"Learn why it\u2019s unsafe to drive with a smoking engine, common causes, and why the color of the smoke matters.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.carparts.com\/blog\/why-is-smoke-coming-from-my-engine\/\" \/>\n<meta property=\"og:site_name\" content=\"In The Garage with CarParts.com\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/carpartscom\" \/>\n<meta property=\"article:author\" content=\"https:\/\/www.facebook.com\/carpartscom\" \/>\n<meta property=\"article:published_time\" content=\"2025-05-08T02:30:38+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-08-08T02:37:28+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2025\/05\/smoke-coming-from-car-engine.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"2000\" \/>\n\t<meta property=\"og:image:height\" content=\"1333\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"CarParts.com Research Team, Richard McCuistian, ASE Certified Master Automobile Technician\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@https:\/\/twitter.com\/CarPartscom\" \/>\n<meta name=\"twitter:site\" content=\"@carpartscom\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"CarParts.com Research Team\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"5 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/why-is-smoke-coming-from-my-engine\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/why-is-smoke-coming-from-my-engine\\\/\"},\"author\":[{\"@type\":\"Person\",\"$id\":\"1651\",\"name\":\"CarParts.com Research Team\",\"jobTitle\":\"Expert Automotive Writer\",\"description\":\"The CarParts.com Research Team is composed of experienced automotive and tech writers working with (ASE)-certified automobile technicians and automotive journalists to bring up-to-date, helpful information to car owners in the US. 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