fuel pump outlets
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500, 472, 425, 368 Discussion, fuel pump outlets in Cadillac Engine Technical Discussion; Just finnished installing the 500 in my 4x4 truck.The fuel pump has two ports coming from it.Since i do not ...
  1. #1
    deeman is offline Cadillac Owners Member
    Join Date
    Apr 2004
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    fuel pump outlets

    Just finnished installing the 500 in my 4x4 truck.The fuel pump has two ports coming from it.Since i do not have a return lines to my dual tanks,can I block the other outlet off or would there be problems?

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  3. #2
    The Ape Man's Avatar
    The Ape Man is offline Cadillac Owners Connoisseur
    Automobile(s): '80 Fleetwood Coupe, 1994 and 1995 Mercedes 140 Coupe
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    Re: fuel pump outlets

    You can block the return off. It's there to lower fuel temperature at the carbonator inlet. If you have problems with hot restarts then consider plumbing a return line to the tank.

  4. #3
    deeman is offline Cadillac Owners Member
    Join Date
    Apr 2004
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    Thread Starter

    Re: fuel pump outlets

    Thanks Ape Man ,I just blocked it off and it seems to work fine so far.A real problem that I have is that I run each tank seperately so having a return line would be a PITA.

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