A
Anonymous
Guest
when im driving or reving the engine if i slowly press the gas down it revs fine but if i slam the gas down it pauses for a second and then revs. ive set the timing and put a new accelerator pump on. Before i put the new accelerator pump on if you slammed the gas down it just died. Its a 170 in a 64 ranchero. im gonna check the vaccum lines tonight to see if that is the problem but any suggestions on what the problem is.