• Hey Guest!
    British Car Forum has been supporting enthusiasts for over 25 years by providing a great place to share our love for British cars. You can support our efforts by upgrading your membership for less than the dues of most car clubs. There are some perks with a member upgrade!
    **Upgrade Now**
    (PS: Upgraded members don't see this banner, nor will you see the Google ads that appear on the site.)
Tips
Tips

Fuel system vent?

Share this page

T

timbomath

Member
Offline
Is there some way of venting the fuel tank other than taking the gasket off the filler cap? After replacing the hoses to the re-circulation device in the trunk that had basically rotted away, I thought I solved the gas vapor smell in the car and garage. Now after running for awhile there is such a vacuum created in the tank that at a certain point the fuel pump just runs and the engine dies from lack of fuel. There is obvious vacuum when removing the filler cap and then it runs fine. Is there some kind of one-way air intake valve that can be installed on one of the recirculation lines or is there a problem somewhere else in the system that needs correcting? I can find little information on the late model fuel system, any help would be greatly appreciated, thanks.
Tim Matheis (timbomath)
 
Tim, just drill a small (1/16" or less) hole in the cap. That should solve your problem. There are other ways to do it, but that's the easiest.
Jeff
 
Bugeye's correct - that's a simple bandaid but it doesn't solve the problem...you've probably got a carbon cannister that's clogged, a return line that's flattened or the cannister in the right rear quarter is inop....
 
I agree, drilling a hole in the gas cap is a bandaid at best. However, you will still probly have a gas smell in your garage. Best thing to do is figure out why your charcoal canister is not absorbing fumes.
 
Back
Top