{"id":84669,"date":"2023-06-01T02:07:09","date_gmt":"2023-06-01T09:07:09","guid":{"rendered":"https:\/\/blogv2prod.wpenginepowered.com\/blog\/?p=84669"},"modified":"2024-02-02T17:08:36","modified_gmt":"2024-02-03T01:08:36","slug":"bad-vent-oil-separator-symptoms","status":"publish","type":"post","link":"https:\/\/www.carparts.com\/blog\/bad-vent-oil-separator-symptoms\/","title":{"rendered":"Bad Vent Oil Separator Symptoms"},"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-column_f186fe-74 > .kt-inside-inner-col{border-top-width:0px;border-right-width:0px;border-bottom-width:0px;border-left-width:0px;}.kadence-column_f186fe-74 > .kt-inside-inner-col,.kadence-column_f186fe-74 > .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-column_f186fe-74 > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column_f186fe-74 > .kt-inside-inner-col{flex-direction:column;}.kadence-column_f186fe-74 > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column_f186fe-74 > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column_f186fe-74{position:relative;}@media all and (max-width: 1024px){.kadence-column_f186fe-74 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column_f186fe-74 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column inner-column-1 kadence-column_f186fe-74 qk-look-widget\"><div class=\"kt-inside-inner-col\">\n<div class=\"wp-block-ultimate-post-row ultp-block-99dfa9  qk-main-wrap\"><div class=\"ultp-row-wrapper\"><div class=\"ultp-row-content\">\n<div class=\"wp-block-ultimate-post-column ultp-block-7eca5e\"><div class=\"ultp-column-wrapper\"><style>.wp-block-kadence-advancedheading.kt-adv-heading_87fd76-55, .wp-block-kadence-advancedheading.kt-adv-heading_87fd76-55[data-kb-block=\"kb-adv-heading_87fd76-55\"]{text-align:center;font-size:20px;font-style:normal;}.wp-block-kadence-advancedheading.kt-adv-heading_87fd76-55 mark.kt-highlight, .wp-block-kadence-advancedheading.kt-adv-heading_87fd76-55[data-kb-block=\"kb-adv-heading_87fd76-55\"] 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-heading_87fd76-55 img.kb-inline-image, .wp-block-kadence-advancedheading.kt-adv-heading_87fd76-55[data-kb-block=\"kb-adv-heading_87fd76-55\"] img.kb-inline-image{width:150px;vertical-align:baseline;}<\/style>\n<div class=\"kt-adv-heading_87fd76-55 summary-title wp-block-kadence-advancedheading\" data-kb-block=\"kb-adv-heading_87fd76-55\"><span>Summary<\/span><\/div>\n\n\n\n<ul class=\"wp-block-list\"><li>The oil separator removes the oil from the crate case vapors and feeds it back into the system by channeling the blow-by gases through a series of baffles or filters.<\/li><li>Excessive smoke, a burning oil smell, and increased oil consumption are symptoms of a bad vent oil separator.<\/li><li>Replacement oil separators can cost anywhere from $10 to $1,800.<\/li><\/ul>\n<\/div><\/div>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n\n\n<p>An excessive amount of smoke pouring out of your vehicle&rsquo;s exhaust can be alarming. Though there are many factors that might be to blame, a faulty vent <a href=\"https:\/\/www.carparts.com\/oil-separator\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"oil separator\">oil separator<\/a> is one possible cause.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What Is an Oil Separator?<\/h2>\n\n\n\n<p>You might be wondering, &ldquo;What does an oil separator even do?&rdquo; The oil separator&rsquo;s job was once handled solely by the positive crankcase ventilation (PCV) valve. Both parts operate to prevent oil mist from blow-by escaping into the atmosphere. Due to recent technological advancements and changes in the industry, compressions and engine temperatures have increased, leading to the increased popularity of oil separators. These days, it operates alongside the PCV in many vehicles.<\/p>\n\n\n\n<p>The oil separator removes the oil from the crate case vapors and feeds it back into the system. It works by channeling the blow-by gases through a series of baffles or filters. This slows down the speed of the gases and lest the oil mist condense. The system can then collect the resulting oil droplets and return them to the crankcase.<\/p>\n\n\n\n<p>In addition, the oil separator controls the flow of the oil and vapors by letting the vapors enter at specific times. It&rsquo;ll also close the systems under certain engine loads.<\/p>\n\n\n\n<p>Since the PCV system draws blowby from the crankcase, if there aren&rsquo;t baffles or something similar to stop engine oil splatter from making it to the PCV valve to be ingested into the engine, then the engine might consume oil by drawing it through the PCV valve. So while there are some engines with easily replaceable oil separators, the ones with baffles in the valve cover that serve this purpose don&rsquo;t usually need service for that reason.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/07\/80s-crown-victoria-and-mustang-pcv-valves-1024x530.jpg\" alt=\"images of a 80s crown victoria and mustang pcv valve\" class=\"wp-image-86786\" width=\"1024\" height=\"530\" srcset=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/07\/80s-crown-victoria-and-mustang-pcv-valves-1024x530.jpg 1024w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/07\/80s-crown-victoria-and-mustang-pcv-valves-300x155.jpg 300w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/07\/80s-crown-victoria-and-mustang-pcv-valves-768x397.jpg 768w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/07\/80s-crown-victoria-and-mustang-pcv-valves-150x78.jpg 150w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/07\/80s-crown-victoria-and-mustang-pcv-valves.jpg 1500w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><figcaption>Metal PCV screen under the PCV valve and grommet on mid &lsquo;80s Crown Victorias and Mustangs | Image Source: Richard McCuistian<\/figcaption><\/figure>\n\n\n<style>.kadence-column_c42889-97 > .kt-inside-inner-col{border-top-width:0px;border-right-width:0px;border-bottom-width:0px;border-left-width:0px;}.kadence-column_c42889-97 > .kt-inside-inner-col,.kadence-column_c42889-97 > .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-column_c42889-97 > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column_c42889-97 > .kt-inside-inner-col{flex-direction:column;}.kadence-column_c42889-97 > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column_c42889-97 > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column_c42889-97{position:relative;}@media all and (max-width: 1024px){.kadence-column_c42889-97 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column_c42889-97 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column inner-column-1 kadence-column_c42889-97 kb-section-dir-vertical kb-section-sm-dir-vertical pro-tip-widget\"><div class=\"kt-inside-inner-col\"><style>#kt-layout-id_f6436c-37 > .kt-row-column-wrap{align-content:start;}:where(#kt-layout-id_f6436c-37 > .kt-row-column-wrap) > .wp-block-kadence-column{justify-content:start;}#kt-layout-id_f6436c-37 > .kt-row-column-wrap{column-gap:var(--global-kb-gap-none, 0rem );row-gap:var(--global-kb-gap-md, 2rem);padding-top:var( --global-kb-row-default-top, 25px );padding-bottom:var( --global-kb-row-default-bottom, 25px );padding-top:20px;padding-bottom:20px;padding-left:16px;padding-right:32px;grid-template-columns:minmax(0, calc(10% - ((var(--global-kb-gap-none, 0rem ) * 1 )\/2)))minmax(0, calc(90% - ((var(--global-kb-gap-none, 0rem ) * 1 )\/2)));}#kt-layout-id_f6436c-37 > .kt-row-layout-overlay{opacity:0.00;}#kt-layout-id_f6436c-37 .kt-row-layout-bottom-sep{height:100px;}#kt-layout-id_f6436c-37 .kt-row-layout-bottom-sep svg{width:100%;}#kt-layout-id_f6436c-37 .kt-row-layout-bottom-sep svg{fill:#ffffff!important;}#kt-layout-id_f6436c-37 .kt-row-layout-top-sep{height:100px;}#kt-layout-id_f6436c-37 .kt-row-layout-top-sep svg{width:100%;}#kt-layout-id_f6436c-37 .kt-row-layout-top-sep svg{fill:#ffffff!important;}@media all and (max-width: 1024px){#kt-layout-id_f6436c-37 > .kt-row-column-wrap{grid-template-columns:minmax(0, 1fr) minmax(0, 2fr);}}@media all and (max-width: 1024px){#kt-layout-id_f6436c-37 .kt-row-layout-bottom-sep{height:px;}}@media all and (max-width: 1024px){#kt-layout-id_f6436c-37 .kt-row-layout-bottom-sep svg{width:%;}}@media all and (max-width: 767px){#kt-layout-id_f6436c-37 > .kt-row-column-wrap{padding-top:28px;padding-bottom:25px;padding-left:16px;padding-right:16px;grid-template-columns:minmax(0, 1fr) minmax(0, 2fr);}#kt-layout-id_f6436c-37 .kt-row-layout-bottom-sep{height:px;}#kt-layout-id_f6436c-37 .kt-row-layout-bottom-sep svg{width:%;}}<\/style>\n<div class=\"wp-block-kadence-rowlayout alignnone pro-tip-wrap\"><div id=\"kt-layout-id_f6436c-37\" class=\"kt-row-layout-inner kt-layout-id_f6436c-37\"><div class=\"kt-row-column-wrap kt-has-2-columns kt-gutter-none kt-v-gutter-default kt-row-valign-top kt-row-layout-right-golden kt-tab-layout-right-golden kt-m-colapse-left-to-right kt-mobile-layout-right-golden  kt-custom-first-width-10  kt-custom-second-width-90\"><style>.kadence-column_d49a55-a3 > .kt-inside-inner-col{display:flex;}.kadence-column_d49a55-a3 > .kt-inside-inner-col{min-height:45px;border-top-width:0px;border-right-width:0px;border-bottom-width:0px;border-left-width:0px;}.kadence-column_d49a55-a3 > .kt-inside-inner-col,.kadence-column_d49a55-a3 > .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-column_d49a55-a3 > .kt-inside-inner-col{flex-direction:row;flex-wrap:wrap;align-items:center;}.kadence-column_d49a55-a3 > .kt-inside-inner-col > *, .kadence-column_d49a55-a3 > .kt-inside-inner-col > figure.wp-block-image, .kadence-column_d49a55-a3 > .kt-inside-inner-col > figure.wp-block-kadence-image{margin-top:0px;margin-bottom:0px;}.kadence-column_d49a55-a3 > .kt-inside-inner-col > .kb-image-is-ratio-size{flex-grow:1;}.kadence-column_d49a55-a3 > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column_d49a55-a3{position:relative;}@media all and (max-width: 1024px){.kadence-column_d49a55-a3 > .kt-inside-inner-col{flex-direction:row;flex-wrap:wrap;align-items:center;}}@media all and (min-width: 768px) and (max-width: 1024px){.kadence-column_d49a55-a3 > .kt-inside-inner-col > *, .kadence-column_d49a55-a3 > .kt-inside-inner-col > figure.wp-block-image, .kadence-column_d49a55-a3 > .kt-inside-inner-col > figure.wp-block-kadence-image{margin-top:0px;margin-bottom:0px;}.kadence-column_d49a55-a3 > .kt-inside-inner-col > .kb-image-is-ratio-size{flex-grow:1;}}@media all and (max-width: 767px){.kadence-column_d49a55-a3 > .kt-inside-inner-col{flex-direction:row;flex-wrap:wrap;justify-content:flex-start;}.kadence-column_d49a55-a3 > .kt-inside-inner-col > *, .kadence-column_d49a55-a3 > .kt-inside-inner-col > figure.wp-block-image, .kadence-column_d49a55-a3 > .kt-inside-inner-col > figure.wp-block-kadence-image{margin-top:0px;margin-bottom:0px;}.kadence-column_d49a55-a3 > .kt-inside-inner-col > .kb-image-is-ratio-size{flex-grow:1;}}<\/style>\n<div class=\"wp-block-kadence-column inner-column-1 kadence-column_d49a55-a3 kb-section-dir-horizontal kb-section-md-dir-horizontal pro-tip-item1\"><div class=\"kt-inside-inner-col\"><style>.kb-image_5266b3-59.kb-image-is-ratio-size, .kb-image_5266b3-59 .kb-image-is-ratio-size{max-width:45px;width:100%;}.wp-block-kadence-column > .kt-inside-inner-col > .kb-image_5266b3-59.kb-image-is-ratio-size, .wp-block-kadence-column > .kt-inside-inner-col > .kb-image_5266b3-59 .kb-image-is-ratio-size{align-self:unset;}.kb-image_5266b3-59 figure{max-width:45px;}.kb-image_5266b3-59 .image-is-svg, .kb-image_5266b3-59 .image-is-svg img{width:100%;}.kb-image_5266b3-59 .kb-image-has-overlay:after{opacity:0.3;}<\/style>\n<div class=\"wp-block-kadence-image kb-image_5266b3-59\"><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=\"\" class=\"kb-img\"><\/figure><\/div>\n<\/div><\/div>\n\n\n<style>.kadence-column_3702a4-34 > .kt-inside-inner-col{border-top-width:0px;border-right-width:0px;border-bottom-width:0px;border-left-width:0px;}.kadence-column_3702a4-34 > .kt-inside-inner-col,.kadence-column_3702a4-34 > .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-column_3702a4-34 > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column_3702a4-34 > .kt-inside-inner-col{flex-direction:column;}.kadence-column_3702a4-34 > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column_3702a4-34 > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column_3702a4-34{position:relative;}@media all and (max-width: 1024px){.kadence-column_3702a4-34 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column_3702a4-34 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column inner-column-2 kadence-column_3702a4-34 pro-tip-item2\"><div class=\"kt-inside-inner-col\">\n<div class=\"protip-desc\">\n\t<div class=\"help-tip\">\n\t\t<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\t<\/div>\n    <div class=\"help-caption\">\n        <p>\n            <strong>Pro Tip:<\/strong>\n            <span>Mid &lsquo;80s Crown Victorias and Mustangs equipped with 5.0L engines have a metal PCV screen under the PCV valve and grommet that will clog over time and require replacement.<\/span>\n        <\/p>\n    <\/div>\n<\/div>\n<\/div><\/div>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n<p>If you didn&rsquo;t know that screen was there, you might wonder why so much oil was leaving the engine through the closure tube and crankcase filter. The screen can be annoying to remove, and some technicians will use a large sheet metal screw brazed or welded to an old screwdriver to extract it. If it&rsquo;s removed and not replaced with a new screen, the engine will consume oil by drawing it through the PCV valve into the intake manifold.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><p>The (metal PCV) screen can be annoying to remove, and some technicians will use a large sheet metal screw brazed or welded to an old screwdriver to extract it. If it&rsquo;s removed and not replaced with a new screen, the engine will consume oil by drawing it through the PCV valve into the intake manifold.<\/p><cite>&ndash;<a href=\"https:\/\/www.carparts.com\/blog\/author\/richardmccuistian\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Richard McCuistian, ASE Certified Master Automobile Technician\">Richard McCuistian, ASE Certified Master Automobile Technician<\/a><\/cite><\/blockquote>\n\n\n\n<h2 class=\"wp-block-heading\">Symptoms of a Bad Vent Oil Separator<\/h2>\n\n\n\n<p>When the oil separator is experiencing problems, you might observe the following symptoms:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Excessive Smoke<\/h3>\n\n\n\n<p>Although some amount of smoke coming from your vehicle&rsquo;s exhaust is to be expected, an excessive amount is cause for concern. This can be a result of blow-by, which is a natural result of your engine&rsquo;s pistons firing. Usually, the oil mist from blow-by is prevented from exiting the vehicle by the positive crankcase ventilation (PCV) valve and the oil separator. When one isn&rsquo;t working properly, the oil mist can escape the vehicle&rsquo;s system through the exhaust, causing plumes of smoke.<\/p>\n\n\n\n<p>Certain vehicle models might also experience <a href=\"https:\/\/www.carparts.com\/blog\/smoke-from-exhaust-meaning\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"blue smoke coming out of the exhaust\">blue smoke coming out of the exhaust<\/a> due to an outdated oil separator.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Burning Oil Smell<\/h3>\n\n\n\n<p>When oil mist escapes from the vent oil separator, it can burn up on components outside the PCV system such as the outside of the engine. This causes a <a href=\"https:\/\/www.carparts.com\/blog\/does-your-car-smell-like-burning-oil-heres-why\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"burning oil smell\">burning oil smell<\/a>. Even a small amount of burning oil can result in a strong smell, which can cause lightheadedness when inhaled.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Increased Oil Consumption<\/h3>\n\n\n\n<p>Since oil separators work to return the oil in blow-by to the oil sump, they reduce oil consumption. When an oil separator isn&rsquo;t working properly, some of the oil that should be going back into the system might be lost instead, increasing oil consumption. You&rsquo;ll notice the need to replace your oil more frequently in this case.<\/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<h3 class=\"wp-block-heading\">Check Engine Light<\/h3>\n\n\n\n<p>Your vehicle might notice a problem with your oil separator before you do. In this case, it&rsquo;ll trigger the <a href=\"https:\/\/www.carparts.com\/blog\/check-engine-light-flashing\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"check engine light\">check engine light<\/a>. Not all vehicles will be able to diagnose the exact problem with your oil separator though, resulting in a variety of stored faults. These might include codes for cylinder misfires, oxygen sensor\/mixture adaptation faults, or even fuel trim faults.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Whistling Noise<\/h3>\n\n\n\n<p>A bad engine oil separator can also cause the crankcase vacuum to be higher than normal, which can cause a whistling or howling noise to erupt from your vehicle. If the problem is particularly bad, the sound can be likened to a freight train pulling up at the station.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Rough Idling<\/h3>\n\n\n\n<p>You&rsquo;ll notice your vehicle is idling rough when it shakes and bounces while running. This will be accompanied by odd sounds and an <a href=\"https:\/\/www.carparts.com\/blog\/what-is-a-normal-engine-idle-rpm\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"inconsistent revolutions per minute\">inconsistent revolutions per minute<\/a> (RPM) count. Since a bad oil separator tends to mess with the crankcase vacuum, a rough idle is to be expected.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Oil Gunk Build-Up<\/h3>\n\n\n\n<p>Trouble with your oil separator might also lead to oil caking around the different parts of your engine. These parts include the cylinder heads, cylinder walls, and piston rings This buildup can be dangerous for your engine and can result in a loss in engine performance if left unchecked.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/05\/blue-car-exhaust-smoke-1024x677.jpg\" alt=\"blue smoke coming from a car's tailpipe\" class=\"wp-image-84682\" width=\"1024\" height=\"677\" srcset=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/05\/blue-car-exhaust-smoke-1024x677.jpg 1024w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/05\/blue-car-exhaust-smoke-300x198.jpg 300w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/05\/blue-car-exhaust-smoke-768x507.jpg 768w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/05\/blue-car-exhaust-smoke-150x99.jpg 150w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/05\/blue-car-exhaust-smoke.jpg 1500w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><figcaption>Certain vehicle models might also experience blue smoke coming out of the exhaust due to an outdated oil separator.<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Oil Separator Replacement Cost<\/h2>\n\n\n\n<p>Since a bad vent oil separator can cause a myriad of problems for your vehicle, it&rsquo;s best to see a mechanic about a repair as soon as you can. Replacement oil separators sell for around $10 to $1,800.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Where to Get a Vent Oil Separator Replacement for Your Ride<\/h2>\n\n\n\n<p>A bad vent oil separator can cause a plethora of issues, so it&rsquo;s best to solve the problem as soon as possible. <a href=\"https:\/\/www.carparts.com\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"CarParts.com\">CarParts.com<\/a> has a selection of <a href=\"https:\/\/www.carparts.com\/search?q=vent_oil_separator\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"top-notch vent oil separators\">top-notch vent oil separators<\/a>, so finding one for your ride should be quick and easy.<\/p>\n\n\n\n<p>You don&rsquo;t have to drive to different auto parts stores to find a compatible vent oil separator for your vehicle. All you have to do is use our vehicle selector tool to narrow down your options to the parts that are compatible with your specific make and model.<\/p>\n\n\n\n<p>We source our products from reputable brands in the industry, so you don&rsquo;t have to worry about quality. Our vent oil separators have all undergone strict quality checks during manufacturing to ensure they work like your factory unit.<\/p>\n\n\n\n<p>Got some questions? Don&rsquo;t hesitate to call our toll-free hotline, and we&rsquo;ll be glad to assist you.&nbsp;<\/p>\n\n\n\n<p>Check out our vent oil separators, and order yours today!<\/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\"> 5<\/span> <span class=\"rt-label rt-postfix\">minutes<\/span><\/span>An excessive amount of smoke pouring out of your vehicle&rsquo;s exhaust can be alarming. Though there are many factors that&#8230; <a href=\"https:\/\/www.carparts.com\/blog\/bad-vent-oil-separator-symptoms\/\" rel=\"nofollow\">Read More<\/a><\/p>\n","protected":false},"author":4,"featured_media":84678,"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":[52,3747],"tags":[3802],"ppma_author":[2607,2985],"class_list":{"0":"post-84669","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-diy","8":"category-engine","9":"tag-oil-separator","10":"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>Bad Vent Oil Separator Symptoms - In The Garage with CarParts.com<\/title>\n<meta name=\"description\" content=\"The vent oil separator is a lesser-known part of your vehicle\u2019s PCV system, but it can still cause a lot of problems if it becomes faulty.\" \/>\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\/bad-vent-oil-separator-symptoms\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Bad Vent Oil Separator Symptoms - In The Garage with CarParts.com\" \/>\n<meta property=\"og:description\" content=\"The vent oil separator is a lesser-known part of your vehicle\u2019s PCV system, but it can still cause a lot of problems if it becomes faulty.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.carparts.com\/blog\/bad-vent-oil-separator-symptoms\/\" \/>\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:published_time\" content=\"2023-06-01T09:07:09+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-02-03T01:08:36+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/05\/automotive-oil-separator.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1500\" \/>\n\t<meta property=\"og:image:height\" content=\"1000\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@carpartscom\" \/>\n<meta name=\"twitter:site\" content=\"@carpartscom\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"7 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/bad-vent-oil-separator-symptoms\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/bad-vent-oil-separator-symptoms\\\/\"},\"author\":[{\"@type\":\"Person\",\"$id\":\"4\",\"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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