• How to Test a Choke Pull-Off

    Basic Purpose – When the engine is cold the choke valve is fully closed (some may have a small gap). This allows the engine to get that extra fuel it needs to get going. When the engine starts vacuum is applied to the choke pull-off which will retract, opening the…

  • Carter AFB Hesitation

    This question was recently asked by one of our customers. 1967 GTX, 4127s have been into this card 50 times. Can not get why the accel’ pump won’t work until half throttle. It seems it’s in the body. I have three 4127s, the other two work. All adjustments are spot…