i have a zz4 with a holley 670 avenger,just changed from factory aluminum intake to a edelbrock rpm air gap,,now the carb is spitting back when i accelerate,have checked everything,it seems to be leaning out has completely died twice when im trying to pullout on the hiway,bout got me ran over,its in a 52 chevvy pickup,will haul tje mail but u cant get on it hard, same truck,same carb,never happened with old intake,,i need some help,,
JA: How old is the transmission? Have you checked the fuel filters?
Customer: trans is newely rebuilt, fuel filter has about 10,000 miles more than the engine
it has 7000 on it same as tranny,
JA: Are you fixing your Avenger yourself? What have you tried so far?
Customer: havent touched itother than to visually check the accelerator pump,its pumping a good stream but im wondering if this manifold may require more pump then i the card came with,,
JA: Anything else you want the mechanic to know before I connect you?
Customer: the inability to accelerate without the popback is my problem..