Vehicles with a V6 engine may develop an engine misfire under load (acceleration). This can be caused by a valve cover gasket leaking oil into a spark plug well, shorting the spark plug to the cylinder head. To repair this concern, the valve cover needs to be resealed and the spark plugs and wires should be replaced.
Engine Misfire Under Load on Mazda 626
Average mileage: 129,000 (129,000–129,000)
Engine affected: 2.5L V6
12 people reported this problem
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Have not had it fixed. Had an estimate of $825. UGH!