Mechanics

GMC C1500 BODY PROBLEM

1993 GMC C1500 • 125,000 miles

Ive been having issuses with my truck not running right and I was wondering if you could help me out. It startz up fine but once you let it sit for a while the engine starts to shake and cut out. When im driving I hit the gas and it doesnt resond like it should. When I roll up to a stop light the oil pressure gauge will drop all the way to 0 then then engine starts cutting out. My dad and I fixed the timing on it because it was off but that didnt fix whatevers wrong with it. We checked the EGR valve and that works. I cleaned the throttle body really good yesterday that didnt make a difference. And just the other day I replaced the fuel filter because that was congested. Once again that didnt fix the problem. Any help at this point would be greatly appriciated. Thanks
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March 9, 2013.



Start with fuel pressure test. If it is a throttle body system it is 9-15 lbs. If it is a vortec, it is 60-65 lbs

Roy