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Re: Name that tune - 2014 Mazda3 2.0L misfire fixed
Posted to Technical Discussion Forum on 3/22/2024 17 Replies

I would guess that the plugs became worn and had high resistance, then the coil insulation became degraded from heat. If you have one of the adjustable spark testers, I think you would have found that the coil produced spark, just not enough. Login to read more.

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