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#1
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1978 GMC Truck - stumbles and stalls at idle
Engine Details:
Recently rebuilt 350 cc Edelbrock 650 cfm carb New plugs, wires, distributor, brake booster No obvious vacuum leaks (tried propane test around vacuum lines) Symptoms: Truck starts up immediately Drives smoothly When idling at a stop light in gear, truck will start to run more rough until it stalls, then will not restart without "priming" the carb. (I carry a tin can and jerry can of gas with me, and can get the truck to restart if I pour a tiny bit of gas down the carb throat). It will idle for longer if I take it out of gear at the stop light, but eventually will stall still (and be impossible to start). If I take it out of gear and give it a bit of gas to keep the idle up, it is fine. This makes waiting in a drive through very inconvenient. Before I started carrying the gas an tin can with me, I actually had to get PUSHED through a drive through line up. I thoughtit must be a vacuum leak, but I could not find one and it seems like the hard to restart problem would not point ot a vacuum leak. I'm thinking it might be some kind of vapor lock, but the gas lines haven't been moved recently, so I don't know why it would start now.... Any ideas appreciated. Eric |
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#2
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It sounds to me like the idle system on your carb may be a little off?
Edelbrock probable has a web site and you can email them your question. One of my kids had a problem with a rochester carb, wouldn't start unless he primed it. It would run and idle ok after started. He carried a can of starter fluid with him. He didn't live with me. The last time he had a problem, I went over, took the air horn off the carb, the float bowl was empty. I put a carb kit in it. It worked ok after that. If you think it is a carb problem, talk to Edelbrock. |
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