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.
Car Problem Reports
Mazda MPV Rumbling Noise, Possible Loss of Power
Mazda MPV Problem
Engine Affected: 3.0L V6
Visitor, 1991 Mazda MPV, 3.0L V6, 217,485 mi
The timming belt makes a tractor sound while engine is running. Can even hear the noise bouncing off cars and buildings while in motion.