my car started too misfire when I hit my sump on a speed bump now the sumps fixed but still misfiring giving error code p0300 multiple cylinder misfire p0304 cylinder 4 misfire so done a compression test all cylinders are fine and changed the spark plugs and all 4 coil packs but misfire still continues :/ any body have any clues on what it could be .... fuses an sensors are all good so I'm just left scratching my head ?????
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