Plug wire arcing

Discussion in 'GM Powertrain' started by dsquared, Dec 2, 2009.

  1. dsquared

    dsquared Member

    Quick question - if there is arcing between plug wires does it typically leave a white grey residue around the area of arcing ? My 97' Burb that bucks under heavy load has I believe original wires w/ 230K miles. I haven't been able to see any arcing at night while idling or reving the engine but this may be happening at speed under load. Thoughts..
  2. Jimmiee

    Jimmiee Epic Member 5+ Years 1000 Posts

    You can try spraying the wires with a windex bottle filled with water. With that many miles I would just change the wires. And yes arcing will leave a white trace.

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