If a rumbling noise is heard from the engine, along with a possible loss in power, it may be caused by a collapsed hydraulic timing belt tensioner creating excessive cam backlash. Our technicians recommend replacing the timing belt and water pump at the same time, if they have not been recently replaced.
Rumbling Noise, Possible Loss of Power on Mazda MPV
Average mileage: 206,242 (195,000–217,485)
Engine affected: 3.0L V6
13 people reported this problem
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The timming belt makes a tractor sound while engine is running. Can even hear the noise bouncing off cars and buildings while in motion.