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'13 Mazda 3 with constant P0303, cannot feel misfire
Posted to Technical Discussion Forum on 8/14/2019 43 Replies

This car...

Came in initially a while ago, slightly rough idle, ran good going down the road. Steady counts in Engine Live Data on #3 misfire. Would count at idle, would count during cruise. Moved ignition parts around, misfire stayed on #3. Mazda has a bull... Login to read more.

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car Vehicle Data

2013 Mazda 3 i 2.0L

VIN JM1BL1L73D
Engine2.0 L
Trans6-speed Automatic (Electronic)

car Vehicle Data

2013 Mazda 3 i 2.0L

VIN JM1BL1L73D
Engine2.0 L
Trans6-speed Automatic (Electronic)