{"id":121747,"date":"2024-11-13T23:27:43","date_gmt":"2024-11-14T07:27:43","guid":{"rendered":"https:\/\/blogv2prod.wpenginepowered.com\/blog\/?p=121747"},"modified":"2025-01-20T17:01:42","modified_gmt":"2025-01-21T01:01:42","slug":"how-to-stop-the-coolant-leaking-from-the-bottom-of-your-car","status":"publish","type":"post","link":"https:\/\/www.carparts.com\/blog\/how-to-stop-the-coolant-leaking-from-the-bottom-of-your-car\/","title":{"rendered":"How To Stop the Coolant Leaking From the Bottom of Your Car"},"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-column121747_3da44d-fb > .kt-inside-inner-col,.kadence-column121747_3da44d-fb > .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-column121747_3da44d-fb > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column121747_3da44d-fb > .kt-inside-inner-col{flex-direction:column;}.kadence-column121747_3da44d-fb > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column121747_3da44d-fb > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column121747_3da44d-fb{position:relative;}@media all and (max-width: 1024px){.kadence-column121747_3da44d-fb > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column121747_3da44d-fb > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column121747_3da44d-fb inner-column-1 qk-look-widget\"><div class=\"kt-inside-inner-col\">\n<div class=\"wp-block-ultimate-post-row ultp-block-06bdb4  qk-main-wrap\"><div class=\"ultp-row-wrapper\"><div class=\"ultp-row-content\">\n<div class=\"wp-block-ultimate-post-column ultp-block-c2d5e4\"><div class=\"ultp-column-wrapper\"><style>.wp-block-kadence-advancedheading.kt-adv-heading121747_34f3bf-e3, .wp-block-kadence-advancedheading.kt-adv-heading121747_34f3bf-e3[data-kb-block=\"kb-adv-heading121747_34f3bf-e3\"]{text-align:center;font-size:20px;font-style:normal;}.wp-block-kadence-advancedheading.kt-adv-heading121747_34f3bf-e3 mark.kt-highlight, .wp-block-kadence-advancedheading.kt-adv-heading121747_34f3bf-e3[data-kb-block=\"kb-adv-heading121747_34f3bf-e3\"] 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-heading121747_34f3bf-e3 img.kb-inline-image, .wp-block-kadence-advancedheading.kt-adv-heading121747_34f3bf-e3[data-kb-block=\"kb-adv-heading121747_34f3bf-e3\"] img.kb-inline-image{width:150px;vertical-align:baseline;}<\/style>\n<div class=\"kt-adv-heading121747_34f3bf-e3 summary-title wp-block-kadence-advancedheading\" data-kb-block=\"kb-adv-heading121747_34f3bf-e3\"><span>Summary<\/span><\/div>\n\n\n\n<ul class=\"wp-block-list\">\n<li>The common places where coolant leaks from include cracked or loose hoses, worn or broken plastic hose connectors, cooling system degas bottles, and intake manifold gaskets (V engines only).<\/li>\n\n\n\n<li>A damaged heater core and a faulty radiator are also common causes of a coolant leak.<\/li>\n\n\n\n<li>To fix a coolant leak, you first have to find the source of the coolant leak.<\/li>\n<\/ul>\n<\/div><\/div>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n\n\n<p>To begin with, the <a href=\"https:\/\/www.carparts.com\/coolant-antifreeze\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"coolant\">coolant<\/a> doesn&rsquo;t typically leak from the top of your car because coolant is subject to gravity like everything else. Even if it&rsquo;s leaking from a point near the top of the engine, it will still find its way to the ground. Finding the source of the leak is the first step in resolving the issue.<\/p>\n\n\n\n<p><strong><em>Caution:<\/em><\/strong><em> To avoid serious burns, never open the cooling system when it&rsquo;s hot. Let it cool first.<\/em><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Where Does Coolant Leak From?<\/h2>\n\n\n\n<p>Again, to fix a leak, you first have to find the leak. Let&rsquo;s talk about that.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Hoses<\/h3>\n\n\n\n<p>There are <a href=\"https:\/\/www.carparts.com\/blog\/how-to-inspect-car-coolant-hoses\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"hoses\">hoses<\/a> that carry coolant from the <a href=\"https:\/\/www.carparts.com\/radiator\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"radiator\">radiator<\/a> to and from the engine and there are hoses that carry coolant to the heater core. Some engines have smaller coolant hoses leading to the throttle body to keep it from freezing and sticking open on long winter drives up north. Some will have coolant hoses leading other places, so be aware of everywhere coolant flows before you start. Hoses can be compromised by age, engine oil leaks, etc. Check the hoses carefully.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Worn Hose Connectors and Plastic Tees<\/h3>\n\n\n\n<p>There are many plastic fittings carrying hot coolant on newer vehicles and over time, plastic fails.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"768\" height=\"1024\" src=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2024\/11\/replacing-a-plastic-tee-with-a-hardware-store-part-that-is-not-designed-to-carry-hot-coolant-768x1024.jpg\" alt=\"replacing a plastic tee with a hardware store part that is not designed to carry hot coolant\" class=\"wp-image-126794\" srcset=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2024\/11\/replacing-a-plastic-tee-with-a-hardware-store-part-that-is-not-designed-to-carry-hot-coolant-768x1024.jpg 768w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2024\/11\/replacing-a-plastic-tee-with-a-hardware-store-part-that-is-not-designed-to-carry-hot-coolant-225x300.jpg 225w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2024\/11\/replacing-a-plastic-tee-with-a-hardware-store-part-that-is-not-designed-to-carry-hot-coolant-1152x1536.jpg 1152w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2024\/11\/replacing-a-plastic-tee-with-a-hardware-store-part-that-is-not-designed-to-carry-hot-coolant-640x853.jpg 640w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2024\/11\/replacing-a-plastic-tee-with-a-hardware-store-part-that-is-not-designed-to-carry-hot-coolant-150x200.jpg 150w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2024\/11\/replacing-a-plastic-tee-with-a-hardware-store-part-that-is-not-designed-to-carry-hot-coolant.jpg 1200w\" sizes=\"(max-width: 768px) 100vw, 768px\"><figcaption class=\"wp-element-caption\">Sometimes customers will replace a plastic tee with a hardware store part that isn&rsquo;t designed to carry hot coolant (see photo), but even OEM plastic tees and fittings can leak. | Image Source: Richard McCuistian<\/figcaption><\/figure>\n\n\n\n<p><a href=\"https:\/\/www.carparts.com\/radiator-hose-clamp\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Clamps\">Clamps<\/a> connect and secure coolant hoses to the radiator and the various engine components.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"416\" src=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2024\/11\/clamps-can-fail.jpg\" alt=\"clamps can fail\" class=\"wp-image-126795\" srcset=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2024\/11\/clamps-can-fail.jpg 500w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2024\/11\/clamps-can-fail-300x250.jpg 300w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2024\/11\/clamps-can-fail-150x125.jpg 150w\" sizes=\"(max-width: 500px) 100vw, 500px\"><figcaption class=\"wp-element-caption\">Clamps can fail. Spring clamps can break and screw clamps can fail if a clamp that is slightly too short is used and gives way later (see photo). | Image Source: Richard McCuistian<\/figcaption><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">Damaged Heater Core<\/h3>\n\n\n\n<p>If you find coolant pooling on your floor mats, then it&rsquo;s likely coming from the heater core. The <a href=\"https:\/\/www.carparts.com\/heater-core\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"heater core\">heater core<\/a> is typically located behind the dashboard, where it dissipates to keep the cabin warm. When it fails, coolant can leak and cause your cabin to smell like sweet fruit.<\/p>\n\n\n\n<p>You may see coolant dripping out of the evaporator drain if the heater core is leaking into the A\/C plenum.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Radiator<\/h3>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"640\" height=\"853\" src=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2024\/11\/most-common-radiator-leak-is-from-cracks-in-the-plastic-tank.jpg\" alt=\"most common radiator leak is from cracks in the plastic tank\" class=\"wp-image-126796\" srcset=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2024\/11\/most-common-radiator-leak-is-from-cracks-in-the-plastic-tank.jpg 640w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2024\/11\/most-common-radiator-leak-is-from-cracks-in-the-plastic-tank-225x300.jpg 225w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2024\/11\/most-common-radiator-leak-is-from-cracks-in-the-plastic-tank-150x200.jpg 150w\" sizes=\"(max-width: 640px) 100vw, 640px\"><figcaption class=\"wp-element-caption\">The most common radiator leak is from cracks in the plastic tank (see photo) or the core where it has been physically punctured. The seals between the plastic tanks and the aluminum core will also leak from time to time. | Image Source: Richard McCuistian<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">How To Fix a Coolant Leak<\/h2>\n\n\n\n<p>Fixing 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> can be hard or it can be easy, depending on what it is. Here are helpful tips on how to find and fix an engine coolant leak:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Follow Safety Protocols<\/h3>\n\n\n\n<p>Don&rsquo;t forget to wear protective gloves and safety goggles to protect your eyes and skin from chemical exposure. Working in a well-lit area with proper ventilation is also a must.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Find the Source of the Leak<\/h3>\n\n\n\n<p>Tracking down the coolant leak is the first step to fixing it.<\/p>\n\n\n\n<p>If you&rsquo;re having trouble finding it, you can try using a pressure tester.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Let the Engine Cool Down<\/h3>\n\n\n\n<p>Working on a hot engine means you&rsquo;re more likely to get burnt by spilled coolant and hot metal parts. For your own safety, let your engine cool down for at least an hour before trying to replace the faulty component.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Replace the Damaged Part<\/h3>\n\n\n\n<p>Depending on where the coolant is leaking from, you might have to ask a mechanic for help.<\/p>\n\n\n\n<p>However, if you&rsquo;re confident in your skills, you can still try to do it yourself. Whether you&rsquo;re replacing a <a href=\"https:\/\/www.carparts.com\/radiator-hose\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"radiator hose\">radiator hose<\/a> or clamp, just be sure to get a replacement that fits your vehicle&rsquo;s year, make, and model.<\/p>\n\n\n\n\n\n\n<h2 class=\"wp-block-heading\">Is It Safe To Drive With a Coolant Leak?<\/h2>\n\n\n\n<p>When you have a coolant leak, fix it or get it fixed. Don&rsquo;t put it off or you could destroy the engine.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">How Much Does a Coolant Leak Repair Cost?<\/h2>\n\n\n\n<p>The exact cost to fix an antifreeze leak will depend on several factors, such as your vehicle&rsquo;s year, make, and model, and what part needs replacing. For example, radiator hoses can cost anywhere between $10 and $750, while hose clamps usually sell for $10 to $30. Keep in mind that these prices don&rsquo;t include labor costs.<\/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>To begin with, the coolant doesn&rsquo;t typically leak from the top of your car because coolant is subject to gravity&#8230; <a href=\"https:\/\/www.carparts.com\/blog\/how-to-stop-the-coolant-leaking-from-the-bottom-of-your-car\/\" rel=\"nofollow\">Read More<\/a><\/p>\n","protected":false},"author":4,"featured_media":122146,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":true,"_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":[3753,52],"tags":[],"ppma_author":[2607,2985],"class_list":{"0":"post-121747","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-cooling-system","8":"category-diy","9":"entry"},"acf":{"adrotate_specific_mobile_ad":"","adrotate_specific_desktop_ad":""},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>How To Stop the Coolant Leaking From the Bottom of Your Car - In The Garage with CarParts.com<\/title>\n<meta name=\"description\" content=\"Having a hard time locating the source of a coolant leak? Learn the common causes of a coolant leak, how to fix it, and other FAQ.\" \/>\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\/how-to-stop-the-coolant-leaking-from-the-bottom-of-your-car\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How To Stop the Coolant Leaking From the Bottom of Your Car - In The Garage with CarParts.com\" \/>\n<meta property=\"og:description\" content=\"Having a hard time locating the source of a coolant leak? Learn the common causes of a coolant leak, how to fix it, and other FAQ.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.carparts.com\/blog\/how-to-stop-the-coolant-leaking-from-the-bottom-of-your-car\/\" \/>\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=\"2024-11-14T07:27:43+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-01-21T01:01:42+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2024\/11\/car-coolant-leak-1.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=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/how-to-stop-the-coolant-leaking-from-the-bottom-of-your-car\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/how-to-stop-the-coolant-leaking-from-the-bottom-of-your-car\\\/\"},\"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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