Register now to get rid of these ads!

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

    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

    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

    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.
    Joined: Jun 15, 2006
    Posts: 3,329


    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.....
    Register now to get rid of these ads!

  5. oldrelics
    Joined: Apr 7, 2008
    Posts: 1,729

    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


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

    from DAGO

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


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


    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

    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.
  11. V8 Bob
    Joined: Feb 6, 2007
    Posts: 2,408

    V8 Bob

    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. :)

Share This Page

Register now to get rid of these ads!


Copyright © 1995-2020 The Jalopy Journal: Steal our stuff, we'll kick your teeth in. Terms of Service. Privacy Policy.

Atomic Industry
Forum software by XenForo™ ©2010-2014 XenForo Ltd.