If you notice that you smell raw fuel while you’re in your car, it could be due to an issue with the gas cap.Beijing Jeep 4000 (4.0 L I6) or Beijing Jeep 4700 (4.7 L V8) (in China)įront-engine, rear-wheel drive or four-wheel drive And the gas station is the place and time for the smell of gas. Either way, that’s not good, and that will allow vapors to escape the fuel tank, and debris to enter it. Maybe it never clicks into place, or maybe you can just feel the cap being loose, or not holding. You also might notice that the gas cap isn’t screwing on correctly. But if the light is on, even though you’ve put the gas cap back on, you probably have a faulty cap. This can be due to the threading wearing down, or just damage on the gas cap. Usually this is because you simply forgot to put the cap back on.īut sometimes it’s because the cap is on, but not forming a good seal. Oh great, another warning light! Many modern cars have a gas cap warning light, to let you know when the gas cap isn’t on. And just like that, your check engine warning light will come on. This will be detected by the evaporative emission control system, which will notice that something is funky. If your gas cap isn’t creating a complete seal, it will allow fuel vapors to exit the system. Well, because you might be able to stop a little problem, like a malfunctioning gas cap, before it turns into a bigger problem. Your car is driving fine, so why do you need to listen to that tiny little light, right? Hey look, it’s your favorite indicator light.
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