5-Series (E12,E28, E34, E39, E60)Chat relating to the BMW 5-Series of all generations. Specific models include: BMW 518, BMW 520, BMW 520i, BMW 530i, BMW 528i, BMW 530i, BMW 518i, BMW 524d, BMW 525i, BMW 525e, BMW 528e, BMW 540i, BMW 535i, BMW 520d, BMW 525td, BMW 525d, BMW 530d, BMW 525i/xi, BMW 530i/xi. (BMW 5-Series Forum)
I recently changed the fuel pump in my 95 525i with a new Beck Arnely pump. It worked fine for the first week or so, but now it makes a hissing sound like it is being over worked. My tank is never below half full so I doubt that it's working too hard due to low fuel levels. Any ideas on how to maybe fix the problem or did I just make a huge mistake by not using an authentic BMW part?
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