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Thread: Fuel regulator - solved

  1. #1
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    Fuel regulator - solved

    Hey guys, does anyone know where the fuel regulator I should located in a 1995 840ci? Recently it’s been taking longer to start the engine. I changed fuel filters but the problem remains.

  2. #2
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    That could be the check valve integrated with the pump or the regulator. If the pressure bleeds off, the car will take forever to start. Luckily, it is an easy solution either way. You could buy a fuel check valve and stick it inline before the filters. The regulator is on the end of your fuel rail. Easy change out. Probably quicker to change the regulator than to pressure test your system to verify which component failed. I'd change the regulator first.

    Brett

  3. #3
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    Thanks Brett! So it’s located down line from the filter underneath the car right?

  4. #4
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    11/88 E32 750iL+98 E36M3
    for such cases the workshop manual helps https://www.bmwtechinfo.com/repair/main/721en/index.htm
    13 - fuel system M60
    see page 13-51/32, under the manifold cover
    Shogun tricks and tips for the E32 series are HERE!

  5. #5
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    99 840ci Sport Indv
    The fuel pressure regulator is on the rear of the inlet manifold - details here:

    http://www.meeknet.co.uk/E32/PCV/Index.htm

    Timm..2007 E64 650i Individual Sport..1999 E31 840ci Individual Sport..ex owner of 2000 E38 740..1999 E38 740i V8 M62..1998 E38 735i V8..1993 E32 730i V8..1988 E28 518i


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  6. #6
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    Sorry guys it’s been awhile lol. I replace the whole setup; fuel filters, fuel regulator and fuel pump because they are old. Turned out it was the fuel pump going bad.

  7. #7
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    Glad you got it sorted.

    Brett

  8. #8
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    Fayetteville, GA, United
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    '95 840Ci/6, F36, E89
    Yeah, that fuel pump was a joy to change :-)

  9. #9
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    Small correction. The fuel regulator was bad not the fuel pump.

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