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Re: Gas vacuum... cooling is the problem (archive)
[ Follow Ups ] [ 8-series (E31) Message Board ] [ Msg. Board FAQ ]
Posted by Steve Cohen on February 02, 2000 at 14:58:33:

In Reply to: Gas vacuum... And Paul M. Brown posted by Jim S. on February 02, 2000 at 14:33:57:

: When I run the gas tank down below a half a tank (in city driving that seems to be about 50 miles---just joking) does everyone else experience a strong vacuum buildup in the gas tank? Surely that can't be good for the fuel pumps? If this is not normal would this indicate a clogged return line or clogged charcoal cannister (or even perhaps both). I would appreciate any and all comments.

: Also, P.M.B., could you please e-mail the seat cable fix to me? Thanks in advance....

: Jim S.
: '92 Laguna Green 850i 6spd. 127,000 miles and going....

Jim, I have the almost the same car.....1991.

The fuel pumps are submerged in the gas tank. A BMW mechanic told me that the pumps are cooled by the gasoline. It was his experience that people who ran their tanks consistantly down to almost nothing.......consistantly had fuel pump problems. VERY expensive to replace.

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