Misfires Under Load on Mazda 626

Problem overview

Misfires under load (acceleration) can be caused by leaky spark plug boots. When a spark plug boot leaks, it allows the spark to arc, or jump, to the cylinder head. If evidence of arcing can be seen on the inside of the spark plug boot, new spark plug wires will be needed.

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Misfires Under Load on Mazda 626

Problem overview

Mazda 626 vehicles with this problem

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