Hard starting when Hot.

1966 -1967 Mopars

  1. Pops1967GTX

    Pops1967GTX FBBO Gold Member FBBO Gold Member

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    Looking for some help. trying to diagnose problem starting 1967 plymouth 440 hp... with vapor lock....going to try a 1" spacer.which one ? open or ported phenolic. Thanks
     
  2. Coronet 500

    Coronet 500 Well-Known Member

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    Some carbs have a bowl vent valve to prevent the expanding fuel from pushing into the manifold and causing a flooded start after sitting when hot.The spacer I would match the manifold opening.
     
  3. Dennis H

    Dennis H FBBO Gold Member FBBO Gold Member

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    Wile working on a heat-soak problem, a friend put a 1" phenolic spacer w/hardware from Summit. He used the one with the 4 holes to improve the vacuum signal to the carbs. They also have one with 1 big hole. Mine is a dual plane.

    Hot restart problems are characteristic to BB's. Think Mr.Angry. We also rerouted some fuel lines and plan to have a drip line back to the tank. The driveablility problems ar in Reno at 5 thousand feet, 95 degrees. Car runs well a sea level mild conditions. Good luck.

    He is JBC426 @ Moparts.
     
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