{"id":119735,"date":"2024-05-10T10:29:08","date_gmt":"2024-05-10T10:29:08","guid":{"rendered":"https:\/\/www.dubizzle.com\/blog\/cars\/?p=119735"},"modified":"2024-05-10T10:29:09","modified_gmt":"2024-05-10T10:29:09","slug":"car-wont-start-when-hot","status":"publish","type":"post","link":"https:\/\/www.dubizzle.com\/blog\/cars\/car-wont-start-when-hot\/","title":{"rendered":"Why Does My Car Struggle to Start When Hot?"},"content":{"rendered":"\n<ul class=\"wp-block-list\"><li><a href=\"#h-worn-out-spark-plugs\">Worn Out Spark Plugs<\/a><\/li><li><a href=\"#h-fuel-pump-issues\">Fuel Pump Issues<\/a><\/li><li><a href=\"#h-vapour-lock\">Vapour Lock<\/a><\/li><li><a href=\"#h-bad-fuel-injectors\">Bad Fuel Injectors<\/a><\/li><li><a href=\"#h-coolant-temperature-sensor\">Coolant Temperature Sensor<\/a><\/li><li><a href=\"#h-faqs\">FAQs <\/a><\/li><\/ul>\n\n\n\n<p>As the summer causes temperatures to rise, car owners may face difficulty starting their vehicles. However, direct fuel injection solved this problem to a certain extent. That said, the car won\u2019t start when hot due to fuel problems or a bad throttle body. Moreover, the problem can be due to the fuel turning into vapour in extreme temperatures.<\/p>\n\n\n\n<p>Let\u2019s go through all the reasons why your car is hard to start when warm and how to fix it.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-causes-of-hard-starting-when-engine-is-hot\">Causes of Hard Starting When Engine is Hot<\/h2>\n\n\n\n<p>When the car engine is heated or there is a problem with the fuel injectors, it may cause <a href=\"https:\/\/www.dubizzle.com\/blog\/cars\/car-cranks-wont-start\/\" target=\"_blank\" rel=\"noreferrer noopener\">car cranks but won\u2019t start<\/a>. Besides, engine overheating is not the only issue why the car won\u2019t start. There may be underlying problems with the fuel system as well.&nbsp;<\/p>\n\n\n\n<p>For instance, a vapour lock occurs when the fuel turns into gas due to extreme heat. Moreover, the car won\u2019t start when hot due to this vapour lock. One must wait for the car to cool down before starting and driving it.<\/p>\n\n\n\n<p>Here are all the reasons why a car takes longer to start on a hot day.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-worn-out-spark-plugs\"><strong>Worn-Out Spark Plugs<\/strong><\/h3>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"640\" src=\"https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2024\/05\/10074015\/Why-Does-My-Car-Struggle-to-Start-When-Hot-body-image-4-1024x640.jpg\" alt=\"fuel injectors connected to the combustion chamber\" class=\"wp-image-119739\" srcset=\"https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2024\/05\/10074015\/Why-Does-My-Car-Struggle-to-Start-When-Hot-body-image-4-1024x640.jpg 1024w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2024\/05\/10074015\/Why-Does-My-Car-Struggle-to-Start-When-Hot-body-image-4-300x188.jpg 300w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2024\/05\/10074015\/Why-Does-My-Car-Struggle-to-Start-When-Hot-body-image-4-768x480.jpg 768w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2024\/05\/10074015\/Why-Does-My-Car-Struggle-to-Start-When-Hot-body-image-4-640x400.jpg 640w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2024\/05\/10074015\/Why-Does-My-Car-Struggle-to-Start-When-Hot-body-image-4-421x263.jpg 421w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2024\/05\/10074015\/Why-Does-My-Car-Struggle-to-Start-When-Hot-body-image-4-558x349.jpg 558w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2024\/05\/10074015\/Why-Does-My-Car-Struggle-to-Start-When-Hot-body-image-4-363x227.jpg 363w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2024\/05\/10074015\/Why-Does-My-Car-Struggle-to-Start-When-Hot-body-image-4-250x156.jpg 250w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2024\/05\/10074015\/Why-Does-My-Car-Struggle-to-Start-When-Hot-body-image-4-368x230.jpg 368w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2024\/05\/10074015\/Why-Does-My-Car-Struggle-to-Start-When-Hot-body-image-4-774x484.jpg 774w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2024\/05\/10074015\/Why-Does-My-Car-Struggle-to-Start-When-Hot-body-image-4-672x420.jpg 672w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2024\/05\/10074015\/Why-Does-My-Car-Struggle-to-Start-When-Hot-body-image-4-437x273.jpg 437w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2024\/05\/10074015\/Why-Does-My-Car-Struggle-to-Start-When-Hot-body-image-4-301x188.jpg 301w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2024\/05\/10074015\/Why-Does-My-Car-Struggle-to-Start-When-Hot-body-image-4-240x150.jpg 240w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2024\/05\/10074015\/Why-Does-My-Car-Struggle-to-Start-When-Hot-body-image-4-771x482.jpg 771w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2024\/05\/10074015\/Why-Does-My-Car-Struggle-to-Start-When-Hot-body-image-4-669x418.jpg 669w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2024\/05\/10074015\/Why-Does-My-Car-Struggle-to-Start-When-Hot-body-image-4-435x272.jpg 435w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption>Spark plugs and fuel systems can be one of the reasons why a car struggles to start<\/figcaption><\/figure>\n\n\n\n<p>When the <a href=\"https:\/\/www.dubizzle.com\/blog\/cars\/spark-plugs-in-a-car\/\" target=\"_blank\" rel=\"noreferrer noopener\">spark plugs<\/a> wear out, the gap between the electrodes widens. This increased gap requires a higher voltage to generate a spark, especially when the engine is hot. If the spark is too weak, it might not ignite the air-fuel mixture properly, leading to difficulty starting the engine.<\/p>\n\n\n\n<p>In some cases, excessive heat around the spark plug can cause fuel to evaporate before it reaches the combustion chamber. For that reason, bad spark plugs might be one of the reasons why the car won\u2019t start when hot. Moreover, it can result in a <a href=\"https:\/\/www.dubizzle.com\/blog\/cars\/car-wont-start-after-getting-fuel\/\" target=\"_blank\" rel=\"noreferrer noopener\">car not starting after getting fuel<\/a> because it would vaporise the fuel and cause issues with the combustion process.<\/p>\n\n\n\n<p>While there are several <a href=\"https:\/\/www.dubizzle.com\/blog\/cars\/bad-spark-plug-symptoms\/\" target=\"_blank\" rel=\"noreferrer noopener\">symptoms of a bad spark plug<\/a>, the issue can be solved with its replacement. If the replacement doesn\u2019t work, you would have to check other fixes if the car won\u2019t start when hot.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-fuel-pump-issues\"><strong>Fuel Pump Issues<\/strong><\/h3>\n\n\n\n<p>When a car is running, especially in hot weather or under heavy load, various components in the engine compartment heat up. This includes the fuel pump, located inside the fuel tank. When the fuel pump gets heated, it will affect the motor. Furthermore, this will cause fuel pressure loss.&nbsp;<\/p>\n\n\n\n<p>The car won\u2019t start when hot due to the fuel system issues. Moreover, it can happen due to a <a href=\"https:\/\/www.dubizzle.com\/blog\/cars\/bad-fuel-pressure-regulator\/\" target=\"_blank\" rel=\"noreferrer noopener\">bad fuel pressure regulator<\/a>.&nbsp;<\/p>\n\n\n\n<p>For that reason, the fix for these <a href=\"https:\/\/www.dubizzle.com\/blog\/cars\/signs-bad-fuel-pump\/\" target=\"_blank\" rel=\"noreferrer noopener\">symptoms of a bad fuel pump<\/a> is to conduct preventive maintenance. Also, change the fuel filters on time.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"640\" src=\"https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2022\/08\/29124951\/auto-anatomy-Fuel-Injectors-body-02-20220610-1024x640.jpg\" alt=\"fuel injectors won't spray fuel if there is vapour locking in the system\" class=\"wp-image-68389\" srcset=\"https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2022\/08\/29124951\/auto-anatomy-Fuel-Injectors-body-02-20220610-1024x640.jpg 1024w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2022\/08\/29124951\/auto-anatomy-Fuel-Injectors-body-02-20220610-300x188.jpg 300w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2022\/08\/29124951\/auto-anatomy-Fuel-Injectors-body-02-20220610-768x480.jpg 768w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2022\/08\/29124951\/auto-anatomy-Fuel-Injectors-body-02-20220610-640x400.jpg 640w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2022\/08\/29124951\/auto-anatomy-Fuel-Injectors-body-02-20220610-421x263.jpg 421w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2022\/08\/29124951\/auto-anatomy-Fuel-Injectors-body-02-20220610-558x349.jpg 558w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2022\/08\/29124951\/auto-anatomy-Fuel-Injectors-body-02-20220610-363x227.jpg 363w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2022\/08\/29124951\/auto-anatomy-Fuel-Injectors-body-02-20220610-250x156.jpg 250w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2022\/08\/29124951\/auto-anatomy-Fuel-Injectors-body-02-20220610-368x230.jpg 368w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2022\/08\/29124951\/auto-anatomy-Fuel-Injectors-body-02-20220610-774x484.jpg 774w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2022\/08\/29124951\/auto-anatomy-Fuel-Injectors-body-02-20220610-672x420.jpg 672w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2022\/08\/29124951\/auto-anatomy-Fuel-Injectors-body-02-20220610-437x273.jpg 437w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2022\/08\/29124951\/auto-anatomy-Fuel-Injectors-body-02-20220610-301x188.jpg 301w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2022\/08\/29124951\/auto-anatomy-Fuel-Injectors-body-02-20220610-240x150.jpg 240w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2022\/08\/29124951\/auto-anatomy-Fuel-Injectors-body-02-20220610-771x482.jpg 771w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2022\/08\/29124951\/auto-anatomy-Fuel-Injectors-body-02-20220610-669x418.jpg 669w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2022\/08\/29124951\/auto-anatomy-Fuel-Injectors-body-02-20220610-435x272.jpg 435w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption>If the fuel pump malfunctions, it won&#8217;t supply the right amount and the car won&#8217;t start under a load<\/figcaption><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-vapour-lock\"><strong>Vapour Lock<\/strong><\/h3>\n\n\n\n<p>Vapour lock mostly occurs in older car models. While the newer models have fuel injectors, old cars faced a vapour lock. In this case, the liquid turns into gas and vapour bubbles. Besides, it blocks the fuel lines, causing the fuel system to fail.&nbsp;<\/p>\n\n\n\n<p>One of the fixes if the car won\u2019t start when hot is to give proper ventilation to the vehicle. Once the car cools down, the vapour will turn into liquid fuel and the car will start. Note that it is one of the main causes of hard starting when the engine is hot.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-bad-fuel-injectors\"><strong>Bad Fuel Injectors<\/strong><\/h3>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"640\" src=\"https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2022\/08\/29124846\/auto-anatomy-Fuel-Injectors-body-01-20220610-1024x640.jpg\" alt=\"bad fuel injectors can cause the car to not start\" class=\"wp-image-68388\" srcset=\"https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2022\/08\/29124846\/auto-anatomy-Fuel-Injectors-body-01-20220610-1024x640.jpg 1024w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2022\/08\/29124846\/auto-anatomy-Fuel-Injectors-body-01-20220610-300x188.jpg 300w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2022\/08\/29124846\/auto-anatomy-Fuel-Injectors-body-01-20220610-768x480.jpg 768w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2022\/08\/29124846\/auto-anatomy-Fuel-Injectors-body-01-20220610-640x400.jpg 640w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2022\/08\/29124846\/auto-anatomy-Fuel-Injectors-body-01-20220610-421x263.jpg 421w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2022\/08\/29124846\/auto-anatomy-Fuel-Injectors-body-01-20220610-558x349.jpg 558w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2022\/08\/29124846\/auto-anatomy-Fuel-Injectors-body-01-20220610-363x227.jpg 363w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2022\/08\/29124846\/auto-anatomy-Fuel-Injectors-body-01-20220610-250x156.jpg 250w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2022\/08\/29124846\/auto-anatomy-Fuel-Injectors-body-01-20220610-368x230.jpg 368w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2022\/08\/29124846\/auto-anatomy-Fuel-Injectors-body-01-20220610-774x484.jpg 774w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2022\/08\/29124846\/auto-anatomy-Fuel-Injectors-body-01-20220610-672x420.jpg 672w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2022\/08\/29124846\/auto-anatomy-Fuel-Injectors-body-01-20220610-437x273.jpg 437w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2022\/08\/29124846\/auto-anatomy-Fuel-Injectors-body-01-20220610-301x188.jpg 301w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2022\/08\/29124846\/auto-anatomy-Fuel-Injectors-body-01-20220610-240x150.jpg 240w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2022\/08\/29124846\/auto-anatomy-Fuel-Injectors-body-01-20220610-771x482.jpg 771w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2022\/08\/29124846\/auto-anatomy-Fuel-Injectors-body-01-20220610-669x418.jpg 669w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2022\/08\/29124846\/auto-anatomy-Fuel-Injectors-body-01-20220610-435x272.jpg 435w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption>A bad injector can also cause the vehicle difficulty to start in hot weather<\/figcaption><\/figure>\n\n\n\n<p>In a <a href=\"https:\/\/www.dubizzle.com\/blog\/cars\/direct-fuel-injection-system\/\" target=\"_blank\" rel=\"noreferrer noopener\">direct fuel injection system<\/a>, a vapour lock isn\u2019t common. A fuel injector sprays the fuel at the pressure in the cylinders. However, a bad fuel injector won\u2019t be of the same use.<\/p>\n\n\n\n<p>A <a href=\"https:\/\/www.dubizzle.com\/blog\/cars\/bad-fuel-injector-symptoms\/\" target=\"_blank\" rel=\"noreferrer noopener\">symptom of a bad fuel injector<\/a> is that it would cause a car to stall or not start. Moreover, when the fuel doesn\u2019t reach the cylinders with pressure, it causes problems starting the car, especially when it is warm. The fix for this issue is to either use a <a href=\"https:\/\/www.dubizzle.com\/blog\/cars\/fuel-injector-cleaner\/\" target=\"_blank\" rel=\"noreferrer noopener\">fuel injector cleaner<\/a> or replace the worn-out injectors.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-coolant-temperature-sensor\"><strong>Coolant Temperature Sensor<\/strong><\/h3>\n\n\n\n<p>Due to varying temperatures, an <a href=\"https:\/\/www.dubizzle.com\/blog\/cars\/engine-coolant-temperature-sensor\/\" target=\"_blank\" rel=\"noreferrer noopener\">engine coolant temperature sensor<\/a> may fail. This can cause severe problems, such as the car won\u2019t start when hot. A common sign of a bad coolant temperature sensor is the black smoke coming out of the exhaust. Moreover, it can cause the <a href=\"https:\/\/www.dubizzle.com\/blog\/cars\/overheating-car-engine-signs-reasons\/\" target=\"_blank\" rel=\"noreferrer noopener\">engine to overheat<\/a>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-faqs\">FAQs<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-what-causes-a-hot-start-issue-in-cars\">What causes a hot start issue in cars?<\/h3>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"640\" src=\"https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2024\/05\/10074224\/Why-Does-My-Car-Struggle-to-Start-When-Hot-body-image-1-1024x640.jpg\" alt=\"a man checking the engine because the car won't start when hot\" class=\"wp-image-119740\" srcset=\"https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2024\/05\/10074224\/Why-Does-My-Car-Struggle-to-Start-When-Hot-body-image-1-1024x640.jpg 1024w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2024\/05\/10074224\/Why-Does-My-Car-Struggle-to-Start-When-Hot-body-image-1-300x188.jpg 300w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2024\/05\/10074224\/Why-Does-My-Car-Struggle-to-Start-When-Hot-body-image-1-768x480.jpg 768w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2024\/05\/10074224\/Why-Does-My-Car-Struggle-to-Start-When-Hot-body-image-1-640x400.jpg 640w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2024\/05\/10074224\/Why-Does-My-Car-Struggle-to-Start-When-Hot-body-image-1-421x263.jpg 421w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2024\/05\/10074224\/Why-Does-My-Car-Struggle-to-Start-When-Hot-body-image-1-558x349.jpg 558w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2024\/05\/10074224\/Why-Does-My-Car-Struggle-to-Start-When-Hot-body-image-1-363x227.jpg 363w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2024\/05\/10074224\/Why-Does-My-Car-Struggle-to-Start-When-Hot-body-image-1-250x156.jpg 250w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2024\/05\/10074224\/Why-Does-My-Car-Struggle-to-Start-When-Hot-body-image-1-368x230.jpg 368w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2024\/05\/10074224\/Why-Does-My-Car-Struggle-to-Start-When-Hot-body-image-1-774x484.jpg 774w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2024\/05\/10074224\/Why-Does-My-Car-Struggle-to-Start-When-Hot-body-image-1-672x420.jpg 672w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2024\/05\/10074224\/Why-Does-My-Car-Struggle-to-Start-When-Hot-body-image-1-437x273.jpg 437w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2024\/05\/10074224\/Why-Does-My-Car-Struggle-to-Start-When-Hot-body-image-1-301x188.jpg 301w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2024\/05\/10074224\/Why-Does-My-Car-Struggle-to-Start-When-Hot-body-image-1-240x150.jpg 240w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2024\/05\/10074224\/Why-Does-My-Car-Struggle-to-Start-When-Hot-body-image-1-771x482.jpg 771w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2024\/05\/10074224\/Why-Does-My-Car-Struggle-to-Start-When-Hot-body-image-1-669x418.jpg 669w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2024\/05\/10074224\/Why-Does-My-Car-Struggle-to-Start-When-Hot-body-image-1-435x272.jpg 435w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption>Check for the fuel system and air intake when the car doesn&#8217;t start in hot weather<\/figcaption><\/figure>\n\n\n\n<p>Cars may face issues due to overheating. Here are some of the reasons why your car won\u2019t start in the summer:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Air intake issues or insufficient air supply causes the engine to overheat and not form a proper air-fuel mixture.<\/li><li>Vapour bubbles block the fuel line and the car won\u2019t start when hot due to this issue.<\/li><li>Other problems may include car batteries, solenoids, spark plugs, fuel injectors and fuel pump issues.<\/li><\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-why-is-my-car-weak-to-start-when-the-engine-is-hot\">Why is my car weak to start when the engine is hot?<\/h3>\n\n\n\n<p>The internal system, windings, solenoids and battery can be damaged due to extreme heat. This can also be a reason why a <a href=\"https:\/\/www.dubizzle.com\/blog\/cars\/car-starts-for-second-then-dies\/\" target=\"_blank\" rel=\"noreferrer noopener\">car starts for a second and then dies<\/a>.&nbsp;<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-why-does-my-car-struggle-to-start-but-run-fine\">Why does my car struggle to start but run fine?<\/h3>\n\n\n\n<p>Sometimes a <a href=\"https:\/\/www.dubizzle.com\/blog\/cars\/car-take-long-start\/\" target=\"_blank\" rel=\"noreferrer noopener\">car takes longer to start<\/a> due to the fuel pump issues. Moreover, corroded battery terminals can cause the car to struggle when starting.<\/p>\n\n\n\n<p>These are all the reasons why your car won\u2019t start when hot or it may struggle and take longer. When you <a href=\"https:\/\/uae.dubizzle.com\/motors\/used-cars\/\" target=\"_blank\" rel=\"noreferrer noopener\">buy a used car in the UAE<\/a> or run an older vehicle model, you must take the car to a professional mechanic. Moreover, you can opt for <a href=\"https:\/\/www.dubizzle.com\/blog\/cars\/inspection-services-dubizzle-cars\/\" target=\"_blank\" rel=\"noreferrer noopener\">dubizzle Cars inspection services<\/a> to avoid future problems.<\/p>\n\n\n\n<p>Stay tuned to the <a href=\"https:\/\/www.dubizzle.com\/blog\/cars\/\" target=\"_blank\" rel=\"noreferrer noopener\">dubizzle cars blog<\/a> and keep reading about the car issues that may arise over time and their fixes.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Vapour bubbles block fuel lines due to hot temperature and cause the car to not start. Here&#8217;s more. <\/p>\n","protected":false},"author":26,"featured_media":119774,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[11],"tags":[],"dubizzle-taxonomy-car-year":[],"dubizzle-taxonomy-body-type":[],"dubizzle-taxonomy-car-doors":[],"dubizzle-taxonomy-car-cylinders":[],"dubizzle-taxonomy-car-extras":[],"dubizzle-taxonomy-car-color":[],"dubizzle-taxonomy-car-fuel-type":[],"class_list":{"0":"post-119735","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-parts-repairs"},"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.0 (Yoast SEO v26.0) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Car Won&#039;t Start When Hot: Spark Plugs, Vapour Lock &amp; More | dubizzle<\/title>\n<meta name=\"description\" content=\"If the car won&#039;t start when hot, it may be due to several issues, such as vapour lock or fuel system problems. 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