Engine Mechanical problem
1982 GMC C3500 V8 Two Wheel Drive Automatic 85,000 miles
Ok here is a problem I am having working on my 82 GMC 1 ton dually w/ 454 carb.
I have replaced the fuel pump because as it was turning over I was getting no fuel to the carb.
After replacing it I had the same problem.
I thought the fuel pump just dried up as the truck has sat for over a year not being started or driven.
Well we had a fuel tank switch over valve go out on my brothers truck and thought maybe it was that even though I could hear it switching over so I replaced it and still no fuel to the carb while its trying to start.
I took the fuel line off the carb and placed it in a 20oz. Plastic soda bottle to watch it if it started pumping so far NOTHING! So I siffened gas from the truck useing the fuel inlet that gos into the fuel pump and it is free and clear and flows gas freely. Have I told you how bad todays gas tastes! Give me the good stuff with some lead in it! LOL
the lines are on the correct fittings on the pump as the one with the threaded fitting gos to the carb and the 3/8 hose fitting that says IN is from the fuel tank. And the 1/4 inch hose is the vent.
I took another 20 oz bottle and fitted it to make it a small fuel pump to get the truck running and maybe long enough to get the pump going fast enough to start pumping gas still nothing!
the fuel pump is a air tex 40963 and looks to be the same one required by all the parts store on line auto zone and Oriellys and advance auto parts. I would'nt think I got 2 bad pumps unless there is a bad batch but that is unlikely. And yes the the fuel pump push rod is in the thing too as I had to fish it out and put a dab of grease on it to keep it up out of the way while I slide the pump in the thing.
I dont want to go electric I dont enough $$$$$$$ to get a good one and I just need to get this going to sell.
any one got ANY IDEAS?
have the same problem?
Thursday, September 10th, 2009 AT 6:56 PM