tbonebanjo
10-20-2009, 07:00 AM
Greetings. I am fairly new to the forum and have already found much help on this site. Thanks, S1-V8!
My own private hell is an 85 S-10 355/350 w/650 holley. The truck will not idle after the choke opens. If I hold it mostly closed (about 1/4" opening at the plate) it runs fine, sounds fairly smooth. As soon as I let it open it dies. I took it out on the street and it ran fine once I got above 3000 or so, I was going sideways down the street, so it seems to have plenty of power (maybe after getting into the secondaries), but when I let off the gas it died. I thought it might be a head gasket, but there is no steam coming out the exhaust. Now I'm thinking it might be a vacuum leak? The previous owner installed the intake manifold, and I'm thinking he skimped out on gaskets (he only used silicone on the thermostat housing). I'd hate to crack the engine open just to find out I needed to adjust the floats on the carb or something. Any ideas would be greatly appreciated.
Carl
My own private hell is an 85 S-10 355/350 w/650 holley. The truck will not idle after the choke opens. If I hold it mostly closed (about 1/4" opening at the plate) it runs fine, sounds fairly smooth. As soon as I let it open it dies. I took it out on the street and it ran fine once I got above 3000 or so, I was going sideways down the street, so it seems to have plenty of power (maybe after getting into the secondaries), but when I let off the gas it died. I thought it might be a head gasket, but there is no steam coming out the exhaust. Now I'm thinking it might be a vacuum leak? The previous owner installed the intake manifold, and I'm thinking he skimped out on gaskets (he only used silicone on the thermostat housing). I'd hate to crack the engine open just to find out I needed to adjust the floats on the carb or something. Any ideas would be greatly appreciated.
Carl