Thread: Holley carb problem
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Old 12-19-2003, 11:39 AM
niles niles is offline
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Join Date: May 2001
Location: niceville fl, fl
Cobra Make, Engine: Hunter #28; 396 Cleveland stroker; more than 495 HP; TKO 5 speed
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I have found that the accelerator pump screw is very sensitive.
If you have any slack in it at all you will have that throttle onset hesitation. Take out free play by adjusting the screw longer on the pump arm, ie, the pump lever should move as soon as the throttle moves. I have found that 1/2 turn will go from hesitation to perfect. Start with little to no play-test and then adjust the screw so that the cam operates soon by 1/2 turn at a time.

fixed mine

gn
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