Why is the cap on my gas tank not clicking?
Inspect for signs of excess dirt, debris or scratch marks where the cap screws into the gas tank. In some cases, especially on older gas tanks with metal gas caps, the cap may be installed crooked or cross threaded and creates a series of scratches on the tank housing. On most modern fuel cells, this simply isn’t practical or possible.
What to do if your gas cap is bad?
If you suspect that your gas cap may be having an issue, have the vehicle inspected by a professional technician, such as one from YourMechanic, to determine if the cap should be replaced. The most popular service booked by readers of this article is Fuel System Inspection.
Why do I need a gas cap on my car?
First, to prevent fuel or vapors found inside the fuel cell from escaping through the fill neck and second, to maintain a constant pressure inside the fuel cell. This pressure is what allows fuel to flow to the fuel pump, and eventually to power your vehicle.
Can a bad gas cap cause a check engine light?
The gas cap is a part of the vehicle’s evaporative emissions system and can cause problems with the system if it has an issue. An improperly sealing fuel cap may cause an evap system leak, which will set off the Check Engine Light when the the computer detects the leak.
Why is the gas cap missing from my car?
The cap is completely disappeared or missing from the car. The cap cannot close properly due to grime and mud near the opening. The gas tank is out of shape due to an accident, putting extra pressure on the gas cap. A gas cap being out of position is something car owners might frequently encounter.
Can a gas cap leak cause a check engine light to go off?
An improperly sealing fuel cap may cause an evap system leak, which will set off the Check Engine Light when the the computer detects the leak. The Check Engine Light can also be set off by a wide variety of other issue so having the computer scanned for trouble codes is highly recommended.
If you suspect that your gas cap may be having an issue, have the vehicle inspected by a professional technician, such as one from YourMechanic, to determine if the cap should be replaced. The most popular service booked by readers of this article is Fuel System Inspection.