Chevy/GMC 6.2L and 6.5L Discussion of Chevy and GMC Trucks with 6.2L and 6.5L Diesel Engines

82 GMC 6.2l headache!!!

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Old Oct 21, 2009 | 12:04 PM
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Default 82 GMC 6.2l headache!!!

I have a 82 GMC 6.2l pickup. I had to replace the head gaskets and now I cannot get it started. (ran and idled great before I did this) I have fuel all the way up to the injector pump and fuel in coming out the return line when I crank it over but I am not getting any fuel to come out the injector pump itself. I have been cranking it over periodically for the last week and can only get a few drips of fuel out of the injector lines. Would this just be a very stubborn air bubble??? Winter is coming and I need my plow truck!!! HELP!

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I tried to pressurize the fuel tank, now I'm starting to see fuel at the injector lines I have 3 lines that squirt when turning over but the others dont do anything. I'll just keep cranking and hope I see fuel soon!
 

Last edited by Greasegun; Oct 21, 2009 at 12:04 PM. Reason: Automerged Doublepost
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Old Oct 21, 2009 | 04:16 PM
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Run a wire from the fuel cutoff to the return line actuator.
 
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Old Oct 24, 2009 | 04:21 PM
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Not sure where those are located??? I've been looking on line for a schematic but I can find one, Do you know where I could look one up?
 
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Old Oct 24, 2009 | 04:24 PM
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there is a single terminal on the left side of the pump there must be 12v on that wire it is a 12guage wire good luck
 
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Old Oct 24, 2009 | 04:30 PM
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Be a heavy gauge wire (fuel cutoff) and two small green wires (solenoid) on top of the pump.
 
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Old Oct 24, 2009 | 05:18 PM
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Cool, had the wires tucked away and didnt see them, I can hear click when I connect the fuel cut off wire, but I dont have power to the green wires, dont know if I'm suposed to or not, getting alot more drips when its turning over though. Thanks guys!
 
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Old Oct 24, 2009 | 05:53 PM
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Need to have power to the solenoid, otherwise the excess fuel doesn't have any place to go.
 
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Old Oct 24, 2009 | 07:40 PM
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Ok, I think I got everything. Fuel dripping at all injectors, tightened up all the lines and poured a little diesel and squirted ether in to the intake, fired a few times but not the batteries are dead, going to try again tomorrow depending if my kids cooperate with me!!!
 
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Old Oct 24, 2009 | 07:47 PM
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Did you run a jumper to the other terminal?? Won't fire if you don't.
 
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Old Oct 24, 2009 | 08:15 PM
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Yeah, ran the jumper Do I take it off if I ever get it started or is that a permanent jumper now?
 
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