A few months ago, I purchased an old truck that had recently went through an engine swap. From a diesel engine to an oldsmobile 350 5.7 Liter I believe.
After driving it the first 2-3 months it ran great. Over the past month it started developing a problem that when the engine was at normal operating temperature, the truck would start stalling and cutting out. First thought I had was the plugs were fouled.
So after replacing the plugs (gapped to.040), wires, distributor cap, rotor, ignition coil, fuel filter and fuel pump I still have the problem. The other day I was on my way home from work and about 10 miles into my drive it cut out completely and died. After fighting it for 20 minutes and not getting it to start, I had someone haul me and my recently embarassed truck home.
Right now, when it basically starts cutting out, I mean its acting like it's being fuel starved, then a surge of fuel will pick up and the truck will resume, but after 1-2 seconds, it will cut out again. This seems to only happen if the truck reaches RPM's in the 3,000-4,000 range. If I drove to the store down the street, it more than likely would not do this.
I'm starting to suspect that the carberator may be to blame here, and thats only because I think I've eliminated any other possibilities. I've read that something called the needles or float may be to blame, but I have no idea what this is. I do know that a rebuild kit costs roughly $20 for a quadra-jet carb, and I need to do something about this ASAP.
My question is. Is there any way to know for sure? I'm looking at rebuilding the carb, but I've never done this so I know it will take some time for me to do it. I just want to make sure that this will more than likely take care of the problem. Or am I missing something thats not been looked at yet?
Tuesday, April 3rd, 2007 AT 8:29 PM