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my friend just picked up a 1976 gmc jimmy.. need HELP!

Discussion in 'The Garage' started by tibs, May 30, 2006.

  1. tibs

    tibs Newbie

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    Location:
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    my friend just picked up a 1976 gmc jimmy.
    high sierra?
    it runs. eh kinda when in drive or reverse it really wants to die and sometimes does we raised the idle abit and it helped little.. we havnt checked it out really yet.. so what should we look for?

    vac leaks
    timing
    anything else?
    me and him are both new to 4x4's and the jimmy
    and even carbs.. please help
     
  2. resurrected_jimmy

    resurrected_jimmy 1/2 ton status

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    Start reading and learning. Pick up a good shop manual if you plan on fooling with it a lot. Do a tune-up on it. Plugs, wires, cap, rotor and find a book specific to the carb you have on the truck. What carb are we talking about? 2 or 4 bbl? Q-jet, rochester, holley, edelbrock ??? The more info you can give on the truck the easier it is for people to understand what problem you are having. Engine/transmission/transfer case/axles
     
  3. tibs

    tibs Newbie

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    well. it is a 4brl probably stock 305.
    the guy he got it from said it had a cam in it dunno which one.

    i dont really know anything about it
     
  4. fireplug

    fireplug 1/2 ton status

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    With a truck that old you have to start at the begining. ID everything, motor and carb, tranny, tcase, axles because anything and everything could have been switched out. Then like said do a complete general tune up, and all filters, and fluids. Then once you know what you have, and that the basics aren't the cause of your troubles, you can start pin pointing specifics using the right manuals.

    I'm just finishing up doing the same on my own newly acquired '76.
     

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