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1997 mariner 225 no spark center coils

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  • 1997 mariner 225 no spark center coils

    Hi everyone , what sends the signal to the coils on a 1997 mariner 225 ? The center coils are not firing , switch the coils and they work on other cylinders

  • #2
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    ECM controls spark...check the ground wires as these are common in harness.
    When in doubt,Trim it out!!!
    Business Owner & Certifed Technician
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