{"id":209,"date":"2021-09-24T08:15:54","date_gmt":"2021-09-24T08:15:54","guid":{"rendered":"https:\/\/motodeets.com\/?p=209"},"modified":"2024-01-27T13:22:19","modified_gmt":"2024-01-27T13:22:19","slug":"oil-on-spark-plug","status":"publish","type":"post","link":"https:\/\/motodeets.com\/blog\/oil-on-spark-plug\/","title":{"rendered":"Causes of Oil on Spark Plug"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_62 counter-hierarchy ez-toc-counter ez-toc-light-blue ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title \" >Table of Contents<\/p>\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: #c9c9c9;color:#c9c9c9\" 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: #c9c9c9;color:#c9c9c9\" 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>\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:\/\/motodeets.com\/blog\/oil-on-spark-plug\/#Top_Causes_of_Oil_on_Spark_Plugs\" title=\"Top Causes of Oil on Spark Plugs\">Top Causes of Oil on Spark Plugs<\/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:\/\/motodeets.com\/blog\/oil-on-spark-plug\/#1_Leaky_Seal_Due_to_Failed_O-ring\" title=\"1. Leaky Seal Due to Failed O-ring\">1. Leaky Seal Due to Failed O-ring<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/motodeets.com\/blog\/oil-on-spark-plug\/#2_Piston_Compression_Ring_issues\" title=\"2. Piston Compression Ring issues\">2. Piston Compression Ring issues<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/motodeets.com\/blog\/oil-on-spark-plug\/#3_Blown_Head_Gasket\" title=\"3. Blown Head Gasket\">3. Blown Head Gasket<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/motodeets.com\/blog\/oil-on-spark-plug\/#4_Worn_out_Intake_Valve_Seal\" title=\"4. Worn out Intake Valve Seal\">4. Worn out Intake Valve Seal<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/motodeets.com\/blog\/oil-on-spark-plug\/#5_Damaged_Piston\" title=\"5. Damaged Piston\">5. Damaged Piston<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/motodeets.com\/blog\/oil-on-spark-plug\/#Symptoms_of_Oil_on_the_Spark_Plug\" title=\"Symptoms of Oil on the Spark Plug\">Symptoms of Oil on the Spark Plug<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/motodeets.com\/blog\/oil-on-spark-plug\/#1_Gasoline_Smell_coming_from_Exhaust\" title=\"1. Gasoline Smell coming from Exhaust\">1. Gasoline Smell coming from Exhaust<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/motodeets.com\/blog\/oil-on-spark-plug\/#2_Blue_Smoke\" title=\"2. Blue Smoke\">2. Blue Smoke<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/motodeets.com\/blog\/oil-on-spark-plug\/#3_Decreased_Fuel_efficiency\" title=\"3. Decreased Fuel efficiency\">3. Decreased Fuel efficiency<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/motodeets.com\/blog\/oil-on-spark-plug\/#FAQs\" title=\"FAQs\">FAQs<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/motodeets.com\/blog\/oil-on-spark-plug\/#1_Is_it_safe_to_drive_with_oil_on_spark_plugs\" title=\"1. Is it safe to drive with oil on spark plugs?\">1. Is it safe to drive with oil on spark plugs?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/motodeets.com\/blog\/oil-on-spark-plug\/#2_How_to_get_oil_out_of_spark_plugs\" title=\"2. How to get oil out of spark plugs?\">2. How to get oil out of spark plugs?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/motodeets.com\/blog\/oil-on-spark-plug\/#3_Can_we_reuse_spark_plugs\" title=\"3. Can we reuse spark plugs?\">3. Can we reuse spark plugs?<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/motodeets.com\/blog\/oil-on-spark-plug\/#Conclusion\" title=\"Conclusion\">Conclusion<\/a><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"Top_Causes_of_Oil_on_Spark_Plugs\"><\/span>Top Causes of Oil on Spark Plugs<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Oil is crucial to keeping your engine lubricated and functioning properly, however it shouldn&#8217;t end up on your spark plug of all places. If it does it can be a symptom of a more significant problem with your engine.<\/p>\n<p>In this article we will go over the common causes of oil getting onto your spark plug. We&#8217;ll also take a look at some of the common indicators that it has occurred. At the end we will answer some frequently asked questions around this topic.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"1_Leaky_Seal_Due_to_Failed_O-ring\"><\/span>1. Leaky Seal Due to Failed O-ring<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Leaky O-rings are a common cause of oil getting onto the spark plug. These rings can become brittle and crack over time, leading to oil making it&#8217;s way through the seal and onto the threads of the spark plug. If this occurs you should look for a replacement.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"2_Piston_Compression_Ring_issues\"><\/span>2. Piston Compression Ring issues<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Piston compression rings are responsible for sealing the space between the cylinder wall and the piston. They collect oil from the cylinder walls, moving it to the pan which prevents oil leakage within the combustion chamber. Over time they can become worn leading to oil getting all around where it shouldn&#8217;t be.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"3_Blown_Head_Gasket\"><\/span>3. Blown Head Gasket<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Between the engine block and the piston head sits the head gasket, it seals off the combustion chamber preventing oil from getting onto your spark plug. If it has blown then oil can easily make its way to your spark plug threads.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"4_Worn_out_Intake_Valve_Seal\"><\/span>4. Worn out Intake Valve Seal<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>If the intake valve seal becomes worn then the engine oil can enter the crank case and also get onto the spark plug. If this occurs it is best to replace the intake valve seal as soon as you can.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"5_Damaged_Piston\"><\/span>5. Damaged Piston<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>As pistons are under a lot of pressure every time you use your vehicle, over time regular wear and tear can really take its toll. Damaged and faulty pistons and cracked cylinder walls are all problems that might cause oil to get onto your spark plug.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Symptoms_of_Oil_on_the_Spark_Plug\"><\/span>Symptoms of Oil on the Spark Plug<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Here we are going to go over some of the common symptoms that there is engine oil on the spark plug.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"1_Gasoline_Smell_coming_from_Exhaust\"><\/span>1. Gasoline Smell coming from Exhaust<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>With oil the spark plug your car is going to have a strong gas smell coming from the exhaust. This is because it creates a richer fuel mixture, particularly during startup.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"2_Blue_Smoke\"><\/span>2. Blue Smoke<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>A spark plug that is dirty with oil doesn&#8217;t easily create a good spark. The engine gets around the problem by increase the air to fuel ratio, this makes the smoke from the exhaust pipe become a blue color.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"3_Decreased_Fuel_efficiency\"><\/span>3. Decreased Fuel efficiency<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>As mentioned previously when the spark plug is dirty or has oil on it, it&#8217;s not as efficient at creating a spark. This means that it has to increase the fuel in the cylinders to keep the pressure in the combustion chamber sufficient. The result of this is using more fuel.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"FAQs\"><\/span>FAQs<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span class=\"ez-toc-section\" id=\"1_Is_it_safe_to_drive_with_oil_on_spark_plugs\"><\/span>1. Is it safe to drive with oil on spark plugs?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Yes, you may drive with oil on your spark plugs, but only temporarily. If the problem persists, it is not safe to drive with oil on a spark plug as it could be a symptom of a bigger more serious problem.<\/p>\n<p>Another thing to consider is the fact that having oil on your spark plug decreases fuel efficiency.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"2_How_to_get_oil_out_of_spark_plugs\"><\/span>2. How to get oil out of spark plugs?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>If there\u2019s oil in the spark plug wells, you might be wondering what you need to do to get it out. The truth is that it\u2019s more important to find the source of the problem and fix it. Getting oil out of a spark plug is not as simple as just cleaning it one time. Ideally, you should try to find the source of the problem. Because the oil is going to find its way inside the compression chamber again and again. This is why it is important to sort out the root problem. For example, if your O-rings are damaged, you need to fix them first, and then you are good to go!<\/p>\n<p>But if there is excess oil, you can get a carb cleaner. You can spray this carb cleaner into the plug holes and allow the oil to go back into the combustion chamber.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"3_Can_we_reuse_spark_plugs\"><\/span>3. Can we reuse spark plugs?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Yes, once your car has been repaired, there is no harm in using the same spark plugs, as long as they&#8217;re clean. Remember, this issue is not about getting oil on spark plugs. It is more about \u201chow\u201d the oil got there. You can use a carb cleaner to spray down all the grease and let it dry. After they dry, you can reuse them.<\/p>\n<p><strong>See Also:<\/strong><\/p>\n<ul>\n<li><a href=\"https:\/\/motodeets.com\/articles\/oil-for-high-mileage-5-3-vortec\/\">Best Oil for High Mileage 5.3 Vortec Engines [Including FAQs]<\/a><\/li>\n<li><a href=\"https:\/\/motodeets.com\/blog\/bad-serpentine-belt\/\">Signs &amp; Symptoms of a Bad Serpentine Belt<\/a><\/li>\n<li><a href=\"https:\/\/motodeets.com\/blog\/low-engine-oil-symptoms\/\">Low Engine Oil Symptoms &amp; FAQs<\/a><\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"Conclusion\"><\/span>Conclusion<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>If any vehicle is giving symptoms of oil on the spark plug, you should examine them right away. Therefore, if there are any oil leakages into the spark plug, it is an indicator of a serious problem. You must take it into consideration and repair it promptly<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Top Causes of Oil on Spark Plugs Oil is crucial to keeping your engine lubricated and functioning properly, however it [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":1050,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}},"footnotes":""},"categories":[7],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.9.1 - 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