Engine Performance problem
1979 Dodge Van V8 Two Wheel Drive Automatic 54000 miles
318 v8 2bbl, AT. Pump pedal 2-3 times, set choke and starts ok if not sitting for months (I don't drive this much if months then I pump it a lot). Let fully warm up and drive 6-7 mi. Ok, does not stall, will accelerate, including foot to the floor ok but after 6 to 7 miles if then slow down in trafic and truck begins to idle slower and wants to die, blipping the gas in neutral will not help-it dies. It struggles and dies as if it were running out of gas but I ran it with air cleaner off today and the accelerator pump was still squirting gas, so gas not problem. Trying to restart, it cranks freely but with no hint of starting. But wait 10 minutes or so when it is in a good mood and it will start with 2 to 3 pumps of gas pedal. Plugs, cap, rotor and wires within the last 2K mi, fuel pump, fuel filter, carb fuel level seems ok. Sprayed base of carb with water while running to check leaks no change, shook carb no change, and blocked carb air horn while running and it did start to die, so no vacuum leak?
Is there something electrical that could die on the truck when it gets hot and then come back on cooling, like a spark module or something?
have the same problem?
Thursday, September 10th, 2009 AT 7:27 PM