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Help!!

Discussion in 'The Garage' started by tenderfoot1877, Sep 13, 2006.

  1. tenderfoot1877

    tenderfoot1877 Registered Member

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    I have an 88 blazer, and for some reason I am not getting ignition in the #4 and #6 cylinders. I have changed out the cap and rotor, changed the spark plugs, changed the plug wires, and I am getting spark all the way to the plug but when the truck is running and i pull the #4 or #6 wire from the cap, it doesn't effect the engine. Somehow, fuel is not getting to those two cylinders. What might be the problem?
    [​IMG]
    HELP!!
    __________________
    6" rough country lift
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    15" MT's
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  2. el diablo

    el diablo Registered Member

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    Do a compression check. If you have two dead cylinders side by side, usually its a blown headgasket.
     
  3. tenderfoot1877

    tenderfoot1877 Registered Member

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    I have about 100psi in both cyllinders.
     
  4. K5er4Life

    K5er4Life 1/2 ton status

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    how does that compare to rest of the cylinders? They should all be around 10-15% of each other.
     
  5. gmc4cw

    gmc4cw 1/2 ton status GMOTM Winner

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    1-8-4-3-6-5-7-2:bow:
     
  6. K5er4Life

    K5er4Life 1/2 ton status

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    :doah: Ive done that a few times.
     

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