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Technical 1955 Cadillac won’t rev and surges

Discussion in 'The Hokey Ass Message Board' started by castironkev, Jan 18, 2020.

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  1. castironkev
    Joined: May 2, 2011
    Posts: 11

    castironkev
    Member

    Hi all,
    I have a 55 caddy 331 in for a customer.
    It was smoking bad and wouldn’t rev but sits happily at idle once warm.
    The motor was bad with a busted oil ring on #1 pot.
    Pulled it, fixed it and put it back.
    Carby ( carter 4bbl) was rebuilt.
    Hooked it all back up.
    No smoke now but still has same issue with not revving.
    If you tickle the throttle it will eventually get the revs up but surges real bad.
    Any ideas?
    My personal opinion is that the carb is no good.
     
  2. Is the mechanical advance working or vacuum advance?
    I had a similar problem with 6 in my Chevy and it was the mechanical advance


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  3. brigrat
    Joined: Nov 9, 2007
    Posts: 5,159

    brigrat
    Member
    from Wa.St.

    If it's not the carb check a restricted exhaust system.................................................
     
  4. WB69
    Joined: Dec 7, 2008
    Posts: 1,227

    WB69
    Member

    I also had this problem before. The advance was not working correctly. It was just gummed up and sticking. Like jchev1953 said. Fixed that and problem solved.
     
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  5. vintage6t
    Joined: Jul 30, 2007
    Posts: 343

    vintage6t
    Member
    from CT

    And check the vacuum like to the advance make sure it's not obstructed or leaking. For that matter check the carb for air leaks at the manifold and other areas of the intake for leaks too.

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  6. Vacuum leak or bad coil/condensor/point set.
     

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