pressure or vacuum? There were some real problems on E38 that even the tanks collapsed due to vacuum build up. Check the tank airation system
Had an odd occurance I'm wondering if anyone else has experienced. About a month ago I had to add gas to my wagon. Undid the gas cap and had a rather strong expulsion of air/vapors/spittle from the filler neck. Thought that was odd, but since I had run it down to almost empty, thought it might just be due to there being so little gas in the tank (running on fumes). But, I continued to have this experience for a number of fill-ups, maybe about 3-4. Then, I thought to myself, I'll check it once or twice a day whether I've run the car or not and see if it seems to stay pressurized. Of course then it stopped having this condition. And now for the last couple weeks, there has been no observed abnormal pressure when I remove the gas cap.
Time for a new gas cap or what?
Scott
'93 525iT 245k miles (sold, but not forgotten)
'11 TSX Sport Wagon
'00 328i
'78 MGB
'08 Saab Aero
pressure or vacuum? There were some real problems on E38 that even the tanks collapsed due to vacuum build up. Check the tank airation system
start by checking into the fuel vent system, perhap there some blockage. There is a expansion tank and a chacoal canister in the vent system.
http://www.realoem.com/bmw/showparts...03&hg=16&fg=10
glen-sj
1995 530IA USA
Production 6/95
1995 540iA M-Sport - 76k miles. 1 of 1 auto AW3 cars.
1995 540i/6 - Misc Parts donor for above.
Scott
'93 525iT 245k miles (sold, but not forgotten)
'11 TSX Sport Wagon
'00 328i
'78 MGB
'08 Saab Aero
1995 540iA M-Sport - 76k miles. 1 of 1 auto AW3 cars.
1995 540i/6 - Misc Parts donor for above.
Seen it on and off without detriment on many cars, inc all my e34s (but not very often). Happens when the tank is fairly empty and has warmed up quickly (pressure) or if it has cooled down (vacuum).
Join the Aussie 540i LE yahoo forum
08/88 535i e34 M30+miller MAF, 'stiens, tints & teeth!