Chainsaw Gas Cap Vent Leaking

If fuel leaks from the carburetor rebuild or replace the carburetor to prevent gas from leaking.

Chainsaw gas cap vent leaking.

If the tank can t vent this added pressure fuel will stop flowing from the tank to the carburetor due to an imbalance in the atmospheric pressure and the tank pressure. The vent hole gets rid of heated gasses so it may be broken. Thought it might be tank vent. For the carburetor to work these pressures must be equal.

Any help would be appreciated. Inspect the top of the gas cap and look for cracks but also inspect the threads on the underside of the cap. If the vent hole is broken ripped open or clogged the gas may leak in other areas. Fuel lines are good.

Replace the fuel tank cap if its seal is damaged and leaking. Replace the cap and see if it is still leaking. Flip the cap upside down and inspect the vent hole which is usually in the middle of the cap on poulan s chainsaw. Check the fuel tank and replace the tank if it s damaged.

Replace the fuel lines if they re leaking. Take spark plug out and pull rope and fuel shoots out of exhaust and spark plug hole. Move the chainsaw to a well ventilated area and check the fuel lines for cracks. In my shop is a poulan 2550 super clean chainsaw for a profuse fuel leak but what i wind up finding is a lot more based on my initial look.

If even a single thread becomes cracked or chipped it can cause fuel to leak out. Still does it just sitting there.