I recently purchased a 1986 928S, and drove it around beautifully for about 500 miles, then all of a sudden it wont start.... it cranks and cranks but never starts. I can hear the fuel pump relay click on and off... but can not hear the pump whine... ive checked the fuses and everything seems good.

I think it is a fuel pump that has gone out, and i have done research and found out that apparently i have 2 fuel pumps, one inside the tank and one outside... i can find the external one for purchase... but the internal one i cannot find.

Also, i cannot locate the pump either...can someone please help me locate it so i can replace it?

 

You have two external fuel pumps. One is behind an accesspanel on the rear/bottom of the tank, the other is in the passenger rear wheel well in front of the tire behind the fender liner.

 

2???? why 2?????..... if i replace the one in the bottom or the tank should it work? or do i have to replace both? again no sound comming from anything resembling a fuel pump sound!

 

Typically both pumps wont die at the same time, so I would check your fuel pump relay first.

To answer the question though, yes you need both fuel pumps working for the car to run.

 

I think i only have one... i found the one in the back under the fuel tank. but not the one in the wheel well... orielies and autozone say that there is only one fuel pump. but i ordered the one from orielies and it was the wrong one... so i ordered one that had a picture identical to the one on my car from autoparts warehouse... we will see if that fixes the problem.