Those Stains Around A Spark Plug... What Are They Caused By?

Those Stains Around A Spark Plug… What Are They Caused By?

ASE-certified technician and Brake & Front End Editor Andrew Markel discusses corona stains on a spark plug and what it’s caused by in this latest installment of Counter Intelligence with Counterman Editor Mark Phillips.

ASE-certified technician and Brake & Front End Editor Andrew Markel discusses corona stains on a spark plug and what they’re caused by in this latest installment of Counter Intelligence with Counterman Editor Mark Phillips.

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