It won't fire!!!!
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Northstar Engines and System Technical Discussion Discussion, It won't fire!!!! in Cadillac Engine Technical Discussion; I just recently exchanged a 4.6 Northstar engine in my 1997 Deville. The engine that I replaced it with came ...
  1. #1
    lgriffin357 is offline Cadillac Owners Member
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    It won't fire!!!!

    I just recently exchanged a 4.6 Northstar engine in my 1997 Deville. The engine that I replaced it with came out of a 1996 Deville with the Northstar engine (eight digit "Y"). Eveything connected fine, except now it won't fire. The engine turns over but it will not start. Any suggesstions? I checked and re-checked the ground wires, but still no success.

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  3. #2
    CadillacSTS42005's Avatar
    CadillacSTS42005 is offline Banned
    Automobile(s): 2005 STS4 1SG: GM Acc Lights, Corsa, Platnium Grille, Volant
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    Re: It won't fire!!!!

    1st get some starting fluid spray it into the throttle body to see if its a fuel problem. if its not fuel then check for spark. also pull the codes!!!

  4. #3
    lgriffin357 is offline Cadillac Owners Member
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    Re: It won't fire!!!!

    Thanks for the quick response, I will post response. Are there anymore suggestions other than that?

  5. #4
    CadillacSTS42005's Avatar
    CadillacSTS42005 is offline Banned
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    Re: It won't fire!!!!

    before i make any other major suggestions i wanna know if its a fuel or a spark problem causing it not to fire it has to be one of the two from their we can proceed but pulling the codes will also majorly help

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