hey dude. you probably have a bad hose (neck tube) going down to the gas tank. best way is to take the tire off, lift the car, access through the truck panel and replace the entire hose (tube). use the same rubber grommets that keep it in place going inwards to the gas tank.
buy a new fuel cap and see if the pressure will work. the hose should cost you about 20-25 bucks. go to an autzone or a junkyard and pull it off.
if not, its robbing you of gas and exposing fumes all over the place.
-dave
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1996 Ford Crown Vic LX 4.6L (207K Miles and COUNTING!  )
1995 Ford Taurus GL 3.0L (Bad Tranny, parts car)
1989 Ford Ranger XLT 2.9L Reg Cab, Long Bed
2008.5 Nissan Titan SE king Cab
2007 Nissan Sentra 2.0 S
1998 Chevrolet Express Van G3500
1992 Oldsmoblile 98 Regency |