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Holley 1-4 psi fuel regulator problems

Discussion in 'The Hokey Ass Message Board' started by SlmLrd, Mar 22, 2011.

  1. SlmLrd
    Joined: Oct 27, 2007
    Posts: 990

    SlmLrd
    Member
    from DAGO

    I have been having some running rich issues with my flathead lately and was stumped until I looked at my fuel pressure regulator I had set at 2lbs of pressure when I installed it.

    I noticed that my 1-4 lb regulator was pushing 9lbs ??

    I tried to re-adjust it but no matter how far out I adjust it, it wont get below 4-5 lbs of pressure. I took it apart to see if the diaphragm had a piece of trash in it or something, blew everything clean and re assembled it. Hooked it back up and same problem. No adjustability. :confused:

    Im running a Stromberg 97 and a Carter fuel pump. I inspected both the pump and carb as well. The warranty on these from Summit is 90 days, so I'm SOL on that. :mad:

    Has anyone else had this problem?
     
  2. JeffreyJames
    Joined: Jun 13, 2007
    Posts: 16,588

    JeffreyJames
    Member
    from SUGAR CITY

    I've heard many a bad things on those regulators. Some work like a charm and some work like a turd. I think Holley makes a couple different ones.
     
  3. Kirk Hanning
    Joined: Feb 27, 2005
    Posts: 1,604

    Kirk Hanning
    Member

    I also had one tht was quite sparatic. I'd set it to do 4 dueces at say 3 lbs. then a minute later my fuel pressure gauge on the firewall would be reading 7 psi? Go down the road a bit it'd be at 2 psi? Luckily all the needle & seats did their job even when at times it'd peg out at 8 psi.
     
  4. GMC BUBBA
    Joined: Jun 15, 2006
    Posts: 3,329

    GMC BUBBA
    Member

    The holleys have trouble with the low settings.
    Get with uncle Max here on the hamb and try one of his Malpassi (sp ?) regulator/filters they are made for the low settings.....
     
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  5. oldrelics
    Joined: Apr 7, 2008
    Posts: 1,729

    oldrelics
    Member
    from Calgary

    Had same trouble this past summer, I took it apart and cleaned it many times before I realized that the cheapo fuel filter was shedding fibres that were getting caught in the ball.
     
  6. chaddilac
    Joined: Mar 21, 2006
    Posts: 13,796

    chaddilac
    Member

    So buy a new one wait a month and return the old one!! :D
     
  7. SlmLrd
    Joined: Oct 27, 2007
    Posts: 990

    SlmLrd
    Member
    from DAGO

    Already ordered- Muahahaha!! :D
     
  8. jetmek
    Joined: Jan 12, 2006
    Posts: 1,847

    jetmek
    Member

    ive had the same problem with those went thru several before i got one that worked
     
  9. madgrinder
    Joined: Feb 5, 2005
    Posts: 324

    madgrinder
    Member

    This is usually the problem with spring/ball regulators... a tiny nugget of debris from the tank, lines, filter end up making the ball not seat.
     
  10. novas4life
    Joined: Dec 19, 2008
    Posts: 254

    novas4life
    Member
    from vnc,wa

    Dead head regulators are best set flowing. Take your fuel line to the carb and put it in a bucket.Set the pressure flowing.
    All dead head regulators "creep" until they flow. Thats why you see the higher pressure at the gauge when not at WOT.
    Brandon
     
  11. V8 Bob
    Joined: Feb 6, 2007
    Posts: 2,408

    V8 Bob
    ALLIANCE MEMBER

    That's the problem I ran into with the Holley #12-804. After trying to set the pressure on a new vehicle build with just the Carter low psi pump running, and after checking/changing the diaphragm, I screwed the adjuster in full, started the engine, and was finally able to set the desired pressure of 2 1/2 psi. to the 97s. It has remained trouble free for over 2 years/5000 miles. :)
     

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