{"id":94126,"date":"2023-10-06T23:06:24","date_gmt":"2023-10-07T06:06:24","guid":{"rendered":"https:\/\/blogv2prod.wpenginepowered.com\/blog\/?p=94126"},"modified":"2024-03-23T00:42:58","modified_gmt":"2024-03-23T07:42:58","slug":"how-does-the-gas-pump-know-when-to-stop","status":"publish","type":"post","link":"https:\/\/www.carparts.com\/blog\/how-does-the-gas-pump-know-when-to-stop\/","title":{"rendered":"How Does the Gas Pump Know When to Stop?"},"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_48a2f4-9a > .kt-inside-inner-col{border-top-width:0px;border-right-width:0px;border-bottom-width:0px;border-left-width:0px;}.kadence-column_48a2f4-9a > .kt-inside-inner-col,.kadence-column_48a2f4-9a > .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_48a2f4-9a > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column_48a2f4-9a > .kt-inside-inner-col{flex-direction:column;}.kadence-column_48a2f4-9a > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column_48a2f4-9a > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column_48a2f4-9a{position:relative;}@media all and (max-width: 1024px){.kadence-column_48a2f4-9a > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column_48a2f4-9a > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column inner-column-1 kadence-column_48a2f4-9a qk-look-widget\"><div class=\"kt-inside-inner-col\">\n<div class=\"wp-block-ultimate-post-row ultp-block-c5406c  qk-main-wrap\"><div class=\"ultp-row-wrapper\"><div class=\"ultp-row-content\">\n<div class=\"wp-block-ultimate-post-column ultp-block-8dc37a\"><div class=\"ultp-column-wrapper\"><style>.wp-block-kadence-advancedheading.kt-adv-heading_4d7b3f-d5, .wp-block-kadence-advancedheading.kt-adv-heading_4d7b3f-d5[data-kb-block=\"kb-adv-heading_4d7b3f-d5\"]{text-align:center;font-size:20px;font-style:normal;}.wp-block-kadence-advancedheading.kt-adv-heading_4d7b3f-d5 mark.kt-highlight, .wp-block-kadence-advancedheading.kt-adv-heading_4d7b3f-d5[data-kb-block=\"kb-adv-heading_4d7b3f-d5\"] 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_4d7b3f-d5 img.kb-inline-image, .wp-block-kadence-advancedheading.kt-adv-heading_4d7b3f-d5[data-kb-block=\"kb-adv-heading_4d7b3f-d5\"] img.kb-inline-image{width:150px;vertical-align:baseline;}<\/style>\n<div class=\"kt-adv-heading_4d7b3f-d5 summary-title wp-block-kadence-advancedheading\" data-kb-block=\"kb-adv-heading_4d7b3f-d5\"><span>Summary<\/span><\/div>\n\n\n\n<ul class=\"wp-block-list\"><li>Gas pumps stop at the right time thanks to the venturi tube. It&rsquo;s a small tube that draws air from the tank until there isn&rsquo;t any left.<\/li><li>If the gas pump stops even if the tank isn&rsquo;t full yet, it could either mean the gas pump is clogged, the vent line is blocked, or there&rsquo;s gas splashing onto the venturi tube.<\/li><li>To avoid accidents at the gas station, you should prevent the gasoline from touching your skin, avoid re-entering the vehicle when refueling, avoid overfilling the tank, and more.<\/li><\/ul>\n<\/div><\/div>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n\n\n<p>Every driver is familiar with the process of using a <a href=\"https:\/\/www.carparts.com\/blog\/how-to-get-gas-at-a-station\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"gas station\">gas station<\/a> pump. Just grab the pump, put the nozzle in the tank, and squeeze the handle. But how does gas know when to stop pumping?<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">How Does a Gas Station Pump Know When to Stop?<\/h2>\n\n\n\n<p>Gas pumps know when to stop pumping thanks to the venturi tube. It&rsquo;s a small tube that runs through the pump nozzle and the handle, sucking in air from the tank to create a vacuum in the pump.<\/p>\n\n\n\n<p>Because the venturi tube draws in air from the <a href=\"https:\/\/www.carparts.com\/fuel-tank\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"tank\">tank<\/a>, the volume of air in the tank diminishes slowly but steadily as fuel fills it up. The more fuel there is in the tank, the less air there is to take in. Once there isn&rsquo;t enough air in the tank, the venturi tube stops sucking it in, preventing additional fuel from entering the tank.<\/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\/10\/driver-using-gas-station-pump-1024x687.jpg\" alt=\"driver using gas station pump\" class=\"wp-image-94222\" width=\"1024\" height=\"687\" srcset=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/10\/driver-using-gas-station-pump-1024x687.jpg 1024w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/10\/driver-using-gas-station-pump-300x201.jpg 300w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/10\/driver-using-gas-station-pump-768x515.jpg 768w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/10\/driver-using-gas-station-pump-1536x1031.jpg 1536w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/10\/driver-using-gas-station-pump-150x101.jpg 150w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/10\/driver-using-gas-station-pump.jpg 2000w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><figcaption>Gas pumps know when to stop pumping thanks to the venturi tube. It&rsquo;s a small tube that runs through the pump nozzle and the handle, sucking in air from the tank to create a vacuum in the pump.<\/figcaption><\/figure>\n\n\n\n<p>In short, the venturi tube sucks in air until there&rsquo;s no air left. Without air, there can be no vacuum inside the pump to supply the tank with additional fuel.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What Does It Mean if the Gas Pump Stops When the Tank Isn&rsquo;t Full?<\/h2>\n\n\n\n<p>Gas station pumps have systems designed to help you refuel your vehicles quickly and effectively with minimal risks, they aren&rsquo;t perfect. Sometimes the pump stops before the tank is full. Here are some of the possible reasons why this happens.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Clogged Gas Pump<\/h3>\n\n\n\n<p>Check the nozzle to see if there are any obstructions. If gunk buildup or debris is blocking the pump, wipe it away and try pumping your vehicle again.<\/p>\n\n\n\n<p>If the problem persists, there might be a blockage somewhere inside the pump itself. In that case, your best bet would be to inform any personnel at the gas station. They can fix the problem and divert you to a different gas pump.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Blocked Vent Line<\/h3>\n\n\n\n<p>If the gas pump is fine but remains incapable of topping off your gas tank, then there might be something wrong with the vent line. It&rsquo;s the component that releases the air in your gas tank as it fills up with fuel. If the vent line is faulty, the air could prevent fuel from entering the tank.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Gas Splashing Onto Venturi Tube<\/h3>\n\n\n\n<p>If the problem persists even after you&rsquo;ve confirmed the gas pump isn&rsquo;t clogged and the vent line is intact, the venturi tube is letting out too much gasoline too quickly.<\/p>\n\n\n\n<p>The tube can get splashed when gas rushes out at high speeds, tricking the pump into thinking that the gas tank is full. In this case, try pumping the gas slower. You can squeeze the pump handle gently.<\/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<h2 class=\"wp-block-heading\">How to Avoid Accidents at the Gas Station<\/h2>\n\n\n\n<p>Gas station pumps are highly sensitive. Misusing one or being too careless with gasoline could land you and the people around you in serious trouble. Because of this, it&rsquo;s important to familiarize yourself with the various things you can do to protect yourself.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Don&rsquo;t Let Gasoline Touch Your Skin<\/h3>\n\n\n\n<p>Gasoline is dangerous because it&rsquo;s made up of hydrocarbons like alkanes, benzene, toluene, and xylene. These are harmful to the human body and have the potential to cause organ damage if they enter your bloodstream.<\/p>\n\n\n\n<p>The fumes from burning gasoline are toxic, while the liquid itself can damage your skin, so it&rsquo;s best to be careful when handling it.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Don&rsquo;t Re-Enter Your Vehicle When Refueling<\/h3>\n\n\n\n<p>Another way to stay safe when refueling at the gas station is to refrain from re-entering your vehicle after exiting it.<\/p>\n\n\n\n<p>There&rsquo;s a slim possibility you might build up a static charge. Although the odds of this charge igniting the fuel are extraordinarily low, it&rsquo;s best to avoid courting disaster.<\/p>\n\n\n\n<p>Stay outside until your gas tank is full. If you must re-enter your vehicle, try to discharge static electricity by touching something metal away from the nozzle.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Never Overfill the Tank<\/h3>\n\n\n\n<p>It&rsquo;s a terrible idea to <a href=\"https:\/\/www.carparts.com\/blog\/is-it-bad-to-overfill-the-gas-tank-plus-other-faqs\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"keep topping off\">keep topping off<\/a> your vehicle&rsquo;s gas tank even after it&rsquo;s full. Not only do you risk fuel spill but you also run the risk of damaging your vehicle&rsquo;s onboard refueling vapor recovery system.<\/p>\n\n\n\n<p>This system absorbs toxic gases when you refuel your vehicle. Without it, you expose yourself to harmful chemicals and put yourself at risk of various illnesses or worse.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Refrain From Smoking<\/h3>\n\n\n\n<p>One of the biggest causes of gas station accidents worldwide is cigarettes being lit too close to fuel pumps. Because of this, you should never, under any circumstances, use your lighter or light matches in a gas station &mdash; or any place with gasoline, for that matter.<\/p>\n\n\n\n<p>All it takes is contact with an open flame for an entire station to explode.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Turn Off the Engine<\/h3>\n\n\n\n<p>Last but not least, don&rsquo;t forget to <a href=\"https:\/\/www.carparts.com\/blog\/can-you-pump-gas-with-the-car-on-plain-answers\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"turn off the engine\">turn off the engine<\/a> before pumping gas. When refueling, always put your vehicle in park and set the emergency brake to keep it perfectly still.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Where to Get Quality Replacement Parts for Your Fuel System<\/h2>\n\n\n\n<p>If you find that you need to visit the gas station much too often, it&rsquo;s likely not the gas pump&rsquo;s fault. There might be something wrong with your vehicle&rsquo;s fuel system. A leak in the system can waste you a lot of money in the long run, not to mention the hazards of gas puddles being left wherever you park. If you suspect a fuel system issue, ask a trusted mechanic to assess your vehicle right away. Thankfully, CarParts.com is here if you need replacement parts to repair your fuel system.<\/p>\n\n\n\n<p>The <a href=\"http:\/\/carparts.com\" target=\"_blank\" rel=\"noreferrer noopener nofollow\" aria-label=\"CarParts.com\">CarParts.com<\/a> catalog has a wide selection of quality aftermarket parts at different price points. Our built-in vehicle selector makes choosing the right parts easy. It&rsquo;ll only show you parts guaranteed to fit your vehicle&rsquo;s make and model. Our friendly and helpful customer service team is also on standby to offer you round-the-clock support. Place your order today using our convenient and secure checkout, and we&rsquo;ll deliver your parts to your door in as fast as two business days. We even have a 60-day return policy to ensure you can order online with confidence.<\/p>\n\n\n\n<p>Don&rsquo;t waste money on leaking fuel. Place your order for a new <a href=\"https:\/\/www.carparts.com\/fuel-line\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"fuel line\">fuel line<\/a> or other fuel system parts at CarParts.com 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>Every driver is familiar with the process of using a gas station pump. Just grab the pump, put the nozzle&#8230; <a href=\"https:\/\/www.carparts.com\/blog\/how-does-the-gas-pump-know-when-to-stop\/\" rel=\"nofollow\">Read More<\/a><\/p>\n","protected":false},"author":4,"featured_media":94221,"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":[53,3768],"tags":[1198],"ppma_author":[2607,3269],"class_list":{"0":"post-94126","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-features","8":"category-lifestyle","9":"tag-fuel-tank-2","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>How Does the Gas Pump Know When to Stop? - In The Garage with CarParts.com<\/title>\n<meta name=\"description\" content=\"How do gas pumps know when to stop pumping and what does it mean if they stop when the tank isn\u2019t full? Find the answers here.\" \/>\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-does-the-gas-pump-know-when-to-stop\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How Does the Gas Pump Know When to Stop? - In The Garage with CarParts.com\" \/>\n<meta property=\"og:description\" content=\"How do gas pumps know when to stop pumping and what does it mean if they stop when the tank isn\u2019t full? 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