Just got my car back together on Friday (ported heads, LT Headers, LT4KM). Ran it for a day with open headers (WOW - it hauled). Got the y-pipe installed on Saturday. Everything was working fine except the exhaust was rubbing a bit under hard acceleration.

Drove it yesterday and began to get some stumbling. It even stalled once. Got to a friends house, turned it off and then tried to start it. It was turning over but not quite catching. I came back a little later and it would turn over but wasn't even close to starting.

The car usually is a little hard to start, but this weekend it took several seconds for it to start.

So I am thinking it is maybe the fuel pump. When it was stumbling yesterday, I would put the clutch in and rev it with no problems. But when under acceleration or climbing a hill it would stumble. I would have to downshift going up hills to keep it from stumbling.

Any help would be greatly appreciated! It was in pieces for 3 months (blown head gasket) and it was finally back together and better than ever until yesterday.

 

Anyone?

 

You need to check basics-fuel and spark.

 

Turn the key to accessory and then find the fuel pressure release vavle and use a small flat head and push the pin in...if if sprays alot of gas out then it is not your pump....it little comes out it is either the pump or a clogged fuel filter....also check each plug wire to make sure it is getting spark.