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New users Registered with a gmail address Attention All new Users 67-68 Deluxe Steering wheel recast Group buy

Almost there...

Discussion in 'The Venerable Q-Jet' started by austingta, Jun 12, 2004.

  1. austingta

    austingta Well-Known Member

    I got my 'new' qjet installed today. It is the correct carb (7041544) for my car.

    It started very easily, considering I let the fuel pump do all the priming. It idles as smoothly as can be. It pulls 20.0 inches of mercury at a 700 idle. I did not have to adjust anything. I was impressed.

    It has no hesitation and is very responsive at less than WOT.

    The problem is that at WOT the secondaries open fine and the car bogs. It actually feels like it is flooding. Anyone have a good guess as to why?

    This carb had been sitting for years and I didn't so much as take the top cover off. I sprayed some carb cleaner into it. Should I send it to JOP or does this sound like an adjustment issue?

    Thanks, Frank
     
    Last edited: Jun 12, 2004
    austingta, Jun 12, 2004
    #1
  2. LARRY70GS

    LARRY70GS a.k.a. "THE WIZARD" Staff Member

    With the engine running at idle, try to push in the airvalves at the top rear of the carb. If you can push them in, the vacuum break on the passenger side front of the carb is defective. It is supposed to hold the airvalves closed, and then let them tip in gradually instead of flopping in, which is the most common cause for bogging. The airvalves themselves have an adjustable spring tension at the shaft. With the engine off, push the airvalves in and let them go. They should spring back smoothly and completely.
     
    LARRY70GS, Jun 12, 2004
    #2
  3. austingta

    austingta Well-Known Member

    That sounds right. Thanks. I will do that tomorrow.

    Frank
     
    austingta, Jun 12, 2004
    #3
  4. RAbarrett

    RAbarrett Well-Known Member

    One other thing to check... the metering rod cam could be defective, especially if it sat for any period of time, exposed to the sun. This cam is located between the air valves in the air horn, and should visibly move the metering rod hanger as the valves move. It should rise and fall as the air valves open and close. Ray
     
    RAbarrett, Jun 15, 2004
    #4

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