When I try to put gas in my car, it acts like it is already full. What could cause this?
Feb 25, 2008 at 7:46 AM
BLACKOP555
✓Experienced Mechanic
10,386 POSTS
It is probably a bad vapor check valve on your tank or a collapsed hose from the tank to the charcoal canister/carbon can. it is probably letting the pressure build up in the tank making it click off. also check to see if the filler hose is collapsed or kinked.