1994 Chevy 1500 4.3L V6 no start... Help Please!!

Discussion in 'Chevy Truck Forum' started by John Jimenez, Feb 18, 2018.

  1. John Jimenez

    John Jimenez Member

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    So I have replaced the fuel pump, fuel filter, distributor, cap, and rotor. New battery, ignition coil, map sensor, and fuel pump relay. So the problem is that the engine turns over but it doesn't start. injectors spray and the flame starts up on top of the carb so tells me I do have spark but does not fully start up and run. I did set the timing correctly and all that fun stuff.

    I do have to say, I bought the truck inoperable and hasn't been turned on since 2012. This is how far I got, please help. Thank you
     
  2. Kennyray

    Kennyray Moderator
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    If it's shooting fire out the top I would guess your distributor is 180 degrees out.
     
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  3. gmctrucks

    gmctrucks Full Member

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    I agree with Kenny it sounds like you should start from scratch set number one piston on #1 and so on or maybe the spark plug wires aren’t in the right place look at video below maybe check where your at on the timing.
    Good luck! GMC

     
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  4. dirtrider73068

    dirtrider73068 Senior Moderator
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    Easy way to check for timeing is bump over the motor put piston on cylinder 1 at top dead center pull distrib acp and see if the rotor is pointing at the number one cylinder will know if its if off or not if it is need to reset the distrib.
     
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  5. John Jimenez

    John Jimenez Member

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    Ok so when you say 180 degrees off I turn the oil Pump shaft 180 degrees counter clockwise?
     
  6. gmctrucks

    gmctrucks Full Member

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    John first check if your timing is off look at the video if the rotor isn’t pointing to the number one cylinder then set the timing like the video shows you it’s super easy view the video several times if it’s ok leave it alone and we can start thinking about what else it might be but doing it this way isn’t going to cost you a dime.


    The video will let you know which way to turn it.
     
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  7. John Jimenez

    John Jimenez Member

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    Ok ive done that part and same results . I'm thinking to clean the carburetor and giving that a shot ?
     
  8. John Jimenez

    John Jimenez Member

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    Can this resolve my problem? Since its like broken?
     

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  9. gmctrucks

    gmctrucks Full Member

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    John you should be able to buy that part at your local auto parts and yes it’s very important that it’s connected correct .

    Another thing get on google and write down what your truck is doing a lot of good stuff will come up and maybe find out what’s up.

    Keep us posted.
     
  10. John Jimenez

    John Jimenez Member

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    Ok so I took off the carb with the injectors in it and cleaned it with wire brush . That elbow that was cracked was Soo clogged up, so I cleaned that and got a new elbow. I also put a new gasket since I was there already. But nothing same results o_O I'm so confused on what other direction to go .
    Also , is there other components that I can change that have a 50/50 chance of "fixing" my problem... New ECU???
     

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