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Thread: Fuel anomaly?

  1. #1
    Join Date
    May 2019
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    Droitwich Spa
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    Fuel anomaly?

    Does anyone know if the fuel pressure regulator on a Chevy 6.3 is adjustable or not?

    I’ve got an issue where I think the car is flooding itself as under load at low revs it will splutter and cough and try and cut out. The gauge is reading about 12 psi and I’m not sure if this is too high and possibly the cause.

    I'm new to cobra ownership and would really appreciate any help if anyone has had something similar?

  2. #2
    Join Date
    Apr 2004
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    East Leake, Nottinghamshire, England.
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    54
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    9,459
    If you are running a Carburettor ? then that is way too much pressure. You should be getting more like 4 PSI.
    Martin

    351W 416.7 HP and 466.8 ft-lbs

    Running Mega Squirt and Edis 8


  3. #3
    Join Date
    Apr 2005
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    Worcestershire
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    44
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    2,133
    Is it an LS with engine management?

  4. #4
    Join Date
    May 2019
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    Droitwich Spa
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    3
    No it’s not an LS and I thought it was too high! Do you know if it’s adjustable? It doesn’t look like it but it must have been set in the first instance!
    Thanks for the quick reply

  5. #5
    Join Date
    May 2019
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    Droitwich Spa
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    If I can figure out how to, I’ll post a picture of it!

  6. #6
    Join Date
    Dec 2007
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    cheshire
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    1,155
    A picture of your set up would help, if it's a holley carb it 7 psi max. Picture first then the solutions will.come flooding in.............sorry I really didn't mean that pun!!

  7. #7
    Join Date
    Jan 2006
    Location
    Chelmsford Essex
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    767
    Adjust to 5-6 psi . You might or should have an in-line pressure regular similar to this one below.Filters the fuel and manages the pressure. 12 psi is way to height and could damage the seals.

    https://www.demon-tweeks.com/malpass...E&gclsrc=aw.ds

    There is a locking nut and adjustment screw on top.

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