The safety of the gas inside the gasoline tank relies on your gas cap or fuel cap. This lid seals gas fumes that tend to escape the tank. In addition, it protects the gas from contaminants that can cause combustion problems to your jeep. More importantly, it keeps the pressure in the tank at standard level in order to allow release of gas into the engine. Damage in your gas cap can cause different issues. Following are just some of them:
A common issue with your fuel cap is indicated by a strong smell of gasoline outside your automobile. This may be due to gas fumes escaping the tank. This means that your gas cap is not properly closed and sealed, allowing the fumes to escape. When you smell the gas odor, immediately check your fuel cap and adjust its position.
Gasoline is a highly volatile substance. This means that, not only is it flammable, it also evaporates quickly. That being said, you need to make sure your gas cap is properly sealed all the time. Gas fumes can escape from the tank and decrease your gas level if it continues to be unnoticed. If you experience poor fuel mileage, you may need to check your Jeep CJ7 gas cap for a broken or leaking gasket.
Despite being located outside your automobile, your fuel cap is still connected to your engine. If your engine does not start, it may not be receiving enough gasoline to burn. This problem may be caused by a vacuum in your gas tank. More than being a lid, your gas cap is a valve that allows air to enter the gas tank to allow release of gasoline when needed. If your fuel cap does not vent air, a vacuum develops inside the tank, making it difficult to release gasoline into the engine.
Another serious issue that may arise from the vacuum inside the gas tank is a blown fuel filter. The vacuum from the tank can travel through the fuel lines and into the fuel filter, causing stress to the fuel filter. As a result, the part blows and becomes damaged. When this happens, check your Jeep CJ7 gas cap immediately.