air pressure in the fuel tank

BMW 740
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MAGEDMANA
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my bmw 740 il 1997 model mileage 104000 engine size 4.4 cc please there is like pom sound while i dreive my car like an air pressure insid the fuel tank i please halpe me
Jul 28, 2007 at 9:10 AM
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DOCHAGERTY
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it is possibly normal fuel pump noise.
Oct 31, 2007 at 2:37 PM