{"id":11351,"date":"2020-07-03T06:47:04","date_gmt":"2020-07-03T13:47:04","guid":{"rendered":"https:\/\/blogv2prod.wpenginepowered.com\/blog\/?p=11351"},"modified":"2024-10-30T03:19:21","modified_gmt":"2024-10-30T10:19:21","slug":"white-smoke-from-exhaust","status":"publish","type":"post","link":"https:\/\/www.carparts.com\/blog\/white-smoke-from-exhaust\/","title":{"rendered":"White Smoke From the Exhaust: What Does it Mean?"},"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\"> 5<\/span> <span class=\"rt-label rt-postfix\">minutes<\/span><\/span><style>.kadence-column11351_664ab9-23 > .kt-inside-inner-col,.kadence-column11351_664ab9-23 > .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-column11351_664ab9-23 > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column11351_664ab9-23 > .kt-inside-inner-col{flex-direction:column;}.kadence-column11351_664ab9-23 > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column11351_664ab9-23 > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column11351_664ab9-23{position:relative;}@media all and (max-width: 1024px){.kadence-column11351_664ab9-23 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column11351_664ab9-23 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column11351_664ab9-23 inner-column-1 qk-look-widget\"><div class=\"kt-inside-inner-col\">\n<div class=\"wp-block-ultimate-post-row ultp-block-e75f3e  qk-main-wrap\"><div class=\"ultp-row-wrapper\"><div class=\"ultp-row-content\">\n<div class=\"wp-block-ultimate-post-column ultp-block-2f62fe\"><div class=\"ultp-column-wrapper\"><style>.wp-block-kadence-advancedheading.kt-adv-heading11351_cf19fd-19, .wp-block-kadence-advancedheading.kt-adv-heading11351_cf19fd-19[data-kb-block=\"kb-adv-heading11351_cf19fd-19\"]{text-align:center;font-size:20px;font-style:normal;}.wp-block-kadence-advancedheading.kt-adv-heading11351_cf19fd-19 mark.kt-highlight, .wp-block-kadence-advancedheading.kt-adv-heading11351_cf19fd-19[data-kb-block=\"kb-adv-heading11351_cf19fd-19\"] 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-heading11351_cf19fd-19 img.kb-inline-image, .wp-block-kadence-advancedheading.kt-adv-heading11351_cf19fd-19[data-kb-block=\"kb-adv-heading11351_cf19fd-19\"] img.kb-inline-image{width:150px;vertical-align:baseline;}<\/style>\n<div class=\"kt-adv-heading11351_cf19fd-19 summary-title wp-block-kadence-advancedheading\" data-kb-block=\"kb-adv-heading11351_cf19fd-19\"><span>Summary<\/span><\/div>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Plumes of white smoke coming from your car&rsquo;s exhaust on a regular basis almost always mean that your vehicle has a significant problem like a blown head gasket or cracked cylinder head.<\/li>\n\n\n\n<li>The other causes of gray or white smoke coming from your exhaust include worn valve guides or seals, worn piston rings or cylinder walls, and a failed turbocharger, among other issues.<\/li>\n\n\n\n<li>White smoke (and not condensation) from your car&rsquo;s exhaust system indicates a serious problem that&rsquo;s only going to get worse. Diagnose and repair the issue as soon as possible to prevent further damage.<\/li>\n<\/ul>\n<\/div><\/div>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n\n\n<p>Smoke from your car&rsquo;s exhaust is never a good sign. A <a href=\"https:\/\/www.carparts.com\/blog\/smoke-from-exhaust-meaning\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"significant amount of white smoke\">significant amount of white smoke<\/a> is particularly worrisome because it almost always indicates an internal engine problem. <\/p>\n\n\n\n<p>And that usually leads to a massive repair bill. <\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What Does White Smoke Coming From Your Exhaust Mean? <\/h2>\n\n\n\n<p>A wisp of white smoke from the exhaust on startup is normal. Condensation builds up in the car&rsquo;s exhaust system, creating steam that looks like traces of smoke. If you live someplace that gets really cold in the winter, you&rsquo;ll notice the phenomenon is even more pronounced when the temperature drops. <\/p>\n\n\n\n<p>But plumes of white smoke coming from your car&rsquo;s exhaust on a regular basis? That&rsquo;s a different story. If you have white smoke coming from your exhaust when you&rsquo;re accelerating, don&rsquo;t ignore it.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"683\" src=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2020\/07\/white-smoke-car-emission-1024x683.jpeg\" alt=\"white smoke emanating from a car tail pipe\" class=\"wp-image-11357\" style=\"width:1024px;height:683px\" srcset=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2020\/07\/white-smoke-car-emission-1024x683.jpeg 1024w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2020\/07\/white-smoke-car-emission-300x200.jpeg 300w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2020\/07\/white-smoke-car-emission-768x513.jpeg 768w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2020\/07\/white-smoke-car-emission-600x400.jpeg 600w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2020\/07\/white-smoke-car-emission.jpeg 1500w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><figcaption class=\"wp-element-caption\">A significant amount of white smoke coming from your car&rsquo;s exhaust on a regular basis almost always points to a serious problem.<\/figcaption><\/figure><\/div>\n\n\n<p>Such a scenario almost always points to a significant problem. Here&rsquo;s what might be wrong: <\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Blown Head Gasket(s)  <\/h3>\n\n\n\n<p>Coolant entering the combustion chamber is the most common cause of white smoke. Actually, the smoke isn&rsquo;t smoke at all, but rather, steam. <\/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\/logos\/badge_wordmark\/full_color\/CP_LOGO_COLOUR_RGB\" 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<p>You&rsquo;ll notice the steam usually has a sweet smell to it. <\/p>\n\n\n\n<p>When coolant enters the combustion chamber, it&rsquo;s often from a blown head gasket, which means it is no longer sealing the combustion chamber from the cooling system passages. <\/p>\n\n\n\n<p>Head gaskets could fail due to engine overheating, oil contamination, low-octane fuel, or excessive boost in turbocharged engines. They can also fail because of poor repairs or just a lot of mileage.<\/p>\n\n\n\n<p>Although <a href=\"https:\/\/www.carparts.com\/head-gasket-set\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"replacing a head gasket\">replacing a head gasket<\/a> may sound like a simple repair&mdash;it&rsquo;s not. The head gasket is wedged between the engine block and cylinder head, making it difficult to access. <\/p>\n\n\n\n<p>Expect to pay at least a couple of thousand dollars to have a professional replace your car&rsquo;s head gasket(s). <\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"683\" src=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2020\/07\/cylinder-head-1024x683.jpeg\" alt=\"cylinder head\" class=\"wp-image-11359\" style=\"width:1024px;height:683px\" srcset=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2020\/07\/cylinder-head-1024x683.jpeg 1024w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2020\/07\/cylinder-head-300x200.jpeg 300w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2020\/07\/cylinder-head-768x512.jpeg 768w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2020\/07\/cylinder-head-600x400.jpeg 600w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2020\/07\/cylinder-head.jpeg 1500w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><figcaption class=\"wp-element-caption\">A cracked block or cylinder head, which can cause white smoke to emanate from the exhaust, usually results from engine overheating.<\/figcaption><\/figure><\/div>\n\n\n<h3 class=\"wp-block-heading\">Cracked Block or Cracked Cylinder Head<\/h3>\n\n\n\n<p>Do you know what&rsquo;s worse than a blown head gasket? A cracked block or cracked <a href=\"https:\/\/www.carparts.com\/cylinder-head-gasket\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"cylinder head\">cylinder head<\/a>, that&rsquo;s what. These failures allow coolant to enter the combustion chamber, much like a bad head gasket would, but they&rsquo;re even more expensive to fix. <\/p>\n\n\n\n<p>Like a blown head gasket, a <a href=\"https:\/\/www.carparts.com\/blog\/the-top-7-symptoms-of-a-cracked-cylinder-head\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"cracked block or cylinder head\">cracked block or cylinder head<\/a> usually results from engine overheating. So, to minimize the likelihood of these costly failures, keep an eye on your temperature gauge at all times. <\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Unburned Fuel Entering the Exhaust (Diesel Engines)<\/h3>\n\n\n\n<p>White smoke pouring out of the tailpipe of a diesel-powered vehicle indicates that unburned (or partially burned) fuel is entering the exhaust. The root cause of this lean condition could be anything from a <a href=\"https:\/\/www.carparts.com\/blog\/common-fuel-pump-symptoms\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"faulty fuel pump\">faulty fuel pump<\/a> to bad glow plugs. <\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Potential Causes of Blue-Gray or White-Gray Smoke <\/h2>\n\n\n\n<p>You&rsquo;ll often hear that oil entering (and being burned inside) the combustion chamber creates blue-gray exhaust smoke. In reality, however, you may find the smoke to be gray or white in color. <\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Worn Valve Guides and\/or Seals <\/h3>\n\n\n\n<p>One way oil can get into the combustion chamber is through worn valve guides and\/or seals. Often, the issue is most noticeable upon startup and goes away quickly. <\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Worn Piston Rings or Cylinder Walls  <\/h3>\n\n\n\n<p>If your engine&rsquo;s <a href=\"https:\/\/www.carparts.com\/piston-ring-set\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"piston rings\">piston rings<\/a> or cylinder walls are worn, oil can sneak past the rings and into the combustion chamber. The end result is often gray-white smoke coming from your car&rsquo;s tailpipe.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Positive Crankcase Ventilation (PCV) System Malfunction <\/h3>\n\n\n\n<p>An issue with the positive crankcase ventilation (PCV) system, such as a <a href=\"https:\/\/www.carparts.com\/blog\/bad-pcv-valve-symptoms-plus-faq\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"stuck PCV valve\">stuck PCV valve<\/a>, can cause excessive oil consumption and white-gray smoke from the exhaust. <\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Failed Turbocharger (If Equipped)<\/h3>\n\n\n\n<p>Failed turbocharger bearings can allow oil to leak past the internal turbocharger seals, creating white smoke from the <a href=\"https:\/\/www.carparts.com\/exhaust-pipe\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"exhaust pipe\">exhaust pipe<\/a>. <\/p>\n\n\n\n<p>In some cases, issues with the turbo feed and return lines can force oil past the seals as well. <\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"683\" src=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2020\/07\/turbocharger-1024x683.jpeg\" alt=\"turbocharger\" class=\"wp-image-11360\" style=\"width:1024px;height:683px\" srcset=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2020\/07\/turbocharger-1024x683.jpeg 1024w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2020\/07\/turbocharger-300x200.jpeg 300w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2020\/07\/turbocharger-768x512.jpeg 768w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2020\/07\/turbocharger-600x400.jpeg 600w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2020\/07\/turbocharger.jpeg 1500w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><figcaption class=\"wp-element-caption\">Failed turbocharger bearings are another possible cause of white smoke emission.<\/figcaption><\/figure><\/div>\n\n\n<h2 class=\"wp-block-heading\">What to Do if White Smoke is Coming From Your Car&rsquo;s Exhaust <\/h2>\n\n\n\n<p>White smoke (not just condensation) from your car&rsquo;s exhaust system indicates a serious problem that&rsquo;s only going to get worse. <\/p>\n\n\n\n<p>If you want to determine if coolant is mixing with your oil, check the engine oil dipstick. The oil should be amber, brown, black, or cream in color, depending on its condition. However, if the oil on the dipstick is foamy, it might have coolant mixed with it.<\/p>\n\n\n\n<p>You can also check the coolant for foam. You can do this by opening the radiator and observing whether the liquid inside has bubbles. If it does, then it isn&rsquo;t a good sign. Another red flag is if the coolant reservoir barely has any coolant left.<\/p>\n\n\n\n<p>You (or your mechanic) should diagnose and repair the issue as soon as possible to prevent further damage.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Products Mentioned in this Guide<\/h2>\n\n\n\n<div class=\"reusable-productlink\">\n\n<!-- start of editable content -->\n\n<a href=\"https:\/\/www.carparts.com\/exhaust-pipe\" target=\"_blank\" aria-label=\"Exhaust Pipe\" rel=\"noopener\">\n<img decoding=\"async\" src=\"https:\/\/cld.partsimg.com\/image\/upload\/d_noimage.jpg,h_200,w_200,c_pad,f_auto,q_auto,dpr_auto,e_sharpen\/images\/rk96290001_1\" alt=\"Exhaust Pipe\">\n<strong>Exhaust Pipe<\/strong>\n<\/a>\n\n<a href=\"https:\/\/www.carparts.com\/piston-ring-set\" target=\"_blank\" aria-label=\"Piston Ring Set\" rel=\"noopener\">\n<img decoding=\"async\" src=\"https:\/\/cld.partsimg.com\/image\/upload\/d_noimage.jpg,h_200,w_200,c_pad,f_auto,q_auto,dpr_auto,e_sharpen\/images\/dnjpr104_1\" alt=\"Piston Ring Set\">\n<strong>Piston Ring Set<\/strong>\n<\/a>\n\n<a href=\"https:\/\/www.carparts.com\/head-gasket-set\" target=\"_blank\" aria-label=\"Head Gasket Set\" rel=\"noopener\">\n<img decoding=\"async\" src=\"https:\/\/cld.partsimg.com\/image\/upload\/d_noimage.jpg,h_200,w_200,c_pad,f_auto,q_auto,dpr_auto,e_sharpen\/images\/rs31250009_1\" alt=\"Head Gasket Set\">\n<strong>Head Gasket Set<\/strong>\n<\/a>\n\n<a href=\"https:\/\/www.carparts.com\/cylinder-head-gasket\" target=\"_blank\" aria-label=\"Cylinder Head Gasket\" rel=\"noopener\">\n<img decoding=\"async\" src=\"https:\/\/cld.partsimg.com\/image\/upload\/d_noimage.jpg,h_200,w_200,c_pad,f_auto,q_auto,dpr_auto,e_sharpen\/images\/repc312721_1\" alt=\"Cylinder Head Gasket\">\n<strong>Cylinder Head Gasket<\/strong>\n<\/a>\n\n<a href=\"https:\/\/www.carparts.com\/fuel-pump\" target=\"_blank\" aria-label=\"Fuel Pump\" rel=\"noopener\">\n<img decoding=\"async\" src=\"https:\/\/cld.partsimg.com\/image\/upload\/d_noimage.jpg,h_200,w_200,c_pad,f_auto,q_auto,dpr_auto,e_sharpen\/images\/repb314526_1\" alt=\"Fuel Pump\">\n<strong>Fuel Pump<\/strong>\n<\/a>\n\n<!-- end of editable content -->\n<\/div>\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\"> 5<\/span> <span class=\"rt-label rt-postfix\">minutes<\/span><\/span>Smoke from your car&rsquo;s exhaust is never a good sign. A significant amount of white smoke is particularly worrisome because&#8230; <a href=\"https:\/\/www.carparts.com\/blog\/white-smoke-from-exhaust\/\" rel=\"nofollow\">Read More<\/a><\/p>\n","protected":false},"author":29,"featured_media":11358,"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":[52,3750],"tags":[1183,158,1070,633,1696,930],"ppma_author":[2622],"class_list":{"0":"post-11351","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-diy","8":"category-exhaust-system","9":"tag-cylinder-head-2","10":"tag-exhaust-pipe","11":"tag-head-gasket-set","12":"tag-muffler","13":"tag-piston-ring-set","14":"tag-turbocharger","15":"entry"},"acf":{"adrotate_specific_mobile_ad":"","adrotate_specific_desktop_ad":""},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>White Smoke From the Exhaust: What Does it Mean? - In The Garage with CarParts.com<\/title>\n<meta name=\"description\" content=\"Plumes of white smoke coming from a car\u2019s exhaust on a regular basis usually indicate a very serious problem in the engine. 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