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Only starts with fresh plugs.

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by Eck, Jan 21, 2003.

  1. Eck

    Eck Registered Member

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    I am having a terrible problem getting my blazer to start. It only starts with a fresh set of plugs. It seems to be flooding and fuel fouling the plugs after I turn it off. With a fresh set of plugs it runs fine, but shut it off and it won't restart after it cools down. Check the plugs and they are flooded. Any advice will be appreciated. I have new rotar, cap wires (8.8mm), rebuilt carb, new spacer, has spark, new fuel filter, clean air filter. The truck also has the folowing equipment on it. 225 hp Marshall 305 , Weiand intake, Edlebrock 600cfm,w/ 1"spacer,Acell super coil, Headers.
    Thanks. /forums/images/graemlins/1zhelp.gif
     
  2. Sandman

    Sandman 3/4 ton status Author

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    I would suspect the carburator. Maybe you have something stuck in the needle and seat or something.
     
  3. WhiteWhomper

    WhiteWhomper 1/2 ton status

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    What type of plugs are you using? The new fancy platinum type plugs have too small of an electrode to work well with a carb that may be running a little rich or an engine that burns a little oil. If you are using one of these plugs, buy a set of cheap AC or Champion plugs and see if that cures your problem.
     
  4. Thunder

    Thunder 3/4 ton status

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    Sounds like the carb to me too. Assuming it is a Q-jet. Sometimes when they are rebuilt. they dont seal up the float bowl plugs rite and the fuel in the bowl will leak out of them down into the manifold. Flooding your engine and making it hard to start.
     
  5. captain chaos

    captain chaos 1/2 ton status

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    did you change the oil also, when you changed the plug's???
    if you're oil has gas in it it will foul out the new plug's.
    change oil replace the plug's again and see what happen's.
    if it happen's again check into carb issues.
    also do you notice it smoken black??
    black smoke mean's it's running rich.
    good luck.
    dave
     
  6. muscle

    muscle 1/2 ton status

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    Have to agree with Thunder. This condition will cause fuel to leak into the manifold until the float bowl is empty. Need to make sure these are tight and the float height is set right.
     
  7. azheep

    azheep Registered Member

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    do you have a electric fuel pump? if you have one, do you have a regulater on it. with out a reg. the pump might force open the needle and seat. if no electric pump check your carb for leaks.
     
  8. Eck

    Eck Registered Member

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    Thanks for the feedback. It gives me some more things to try.
     

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