Which Fuel Pressure Regulator?
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Northstar Engines and System Technical Discussion Discussion, Which Fuel Pressure Regulator? in Cadillac Engine Technical Discussion; On rockauto.com it lists 3 differant part numbers for fuel pressure regulators. One says "1st design; used with nylon fuel ...
  1. #1
    davesdeville's Avatar
    davesdeville is offline Banned
    Automobile(s): 1995 ETC, 75 Deville, Cad500 powered 73 Apollo, 94 Mark VIII
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    Which Fuel Pressure Regulator?

    On rockauto.com it lists 3 differant part numbers for fuel pressure regulators. One says "1st design; used with nylon fuel rail" and the other says used with stainless steel fuel rail. The other doesn't say which. I just got the stainless steel rail today, but I thought they put the old FPR on it? In fact I know they did...

    So what's the deal with there being 2?

    Also, I pulled the vacuum line before I took the FPR off and it was leaking a little bit. Then when I put it back on and secured the clip again it didn't seem to leak. Shouldn't it either leak or not leak?

    This is what mine looks like.
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  3. #2
    Hason560 is offline Cadillac Owners Member
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    Re: Which Fuel Pressure Regulator?

    well the o ring could have not been sitting right. i sell delco to the caddilac place here in gainesville florida and i must send 5 of the new fpr over there per day i belive they are only a couple of dollors.

  4. #3
    mtflight's Avatar
    mtflight is offline Cadillac Owners Connoisseur
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    Re: Which Fuel Pressure Regulator?

    If it was leaking, Dave, it probably needs to be replaced.

    you idle the engine, and pull the vacuum line off... it's supposed to be leak-free. (And I heard the hissing from the vacuum line).

    If you need a good place to get the part, I know a place... PM me. They may even help you get the right one.

    Regards,

    Alex


    Quote Originally Posted by davesdeville
    On rockauto.com it lists 3 differant part numbers for fuel pressure regulators. One says "1st design; used with nylon fuel rail" and the other says used with stainless steel fuel rail. The other doesn't say which. I just got the stainless steel rail today, but I thought they put the old FPR on it? In fact I know they did...

    So what's the deal with there being 2?

    Also, I pulled the vacuum line before I took the FPR off and it was leaking a little bit. Then when I put it back on and secured the clip again it didn't seem to leak. Shouldn't it either leak or not leak?

    This is what mine looks like.

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