Fuel Tank Caps

The gas cap is a vital component that seals the fuel tank to keep fuel from leaking and it also prevents dirt and debris from entering the tank.

Fuel tank cap purpose

The gas or fuel tank cap is made of plastic with lugs that are placed into the filler neck of the fuel tank. The cap was made to cover the tank filler neck, but it was soon developed to provide other safety operations like keeping the fuel from flowing out when you get into an accident. The cap helps to lessen fuel leaks or fuel vapors from the filler neck because these leaks can cause an increase in emissions.

Common issues with a faulty fuel tank cap

A defective fuel tank cap can lead to leaking, exposure to contaminants, or an increase in harmful emissions.