Question about 1994 Chevrolet K1500

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Chevy K1500 - Coil and plug spark loss

I can see blue spark loss at the plugs and at the coil of my 5.7 engine. First attempt to solve this problem - I replaced coil, distributor, rotor, distrib. cap., spark plugs, and wires with Genuine AC parts from the dealer. Problem went away for 1 day and returned. I see blue sparks when viewed in the dark under the hood at each plug and at the coil.

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  • autodr
    autodr May 11, 2010

    you said problem went away for a day but failed to mention problem. how does it run? when you replaced the distributor, did that include the module?

  • Anonymous Mar 18, 2014

    loss of power and engine lite comes on. under a load it feels like its breaking up.the scanner code that comes up is p0351. changed 3 coils and problem didn't go away.

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This is more common when there is a high level of moisture in the air especially with older components. Moisture can settle on the distributor and wires and act as a conductor. Since you are still having this problem with the new parts I would suggest using a moisture dissipating spray such as WD-40 or PB Blaster.

Posted on Dec 05, 2008

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