Symptom D
SYMPTOM D PISTON SLAPPINGSYMPTOM "D" APPLICABLE MODELS/VINS
Mazda Motor Corporation has engineered and developed its piston engines to meet a wide variety of operaing conditions while deliveries excellent fuel economy and performance. Mazda makes extensive use of modern metal alloys to meet weight and emission requirements.
As a result of these varied and exacting requirements and materials, a number of components in the engine may, during initial start-up and warm-up, expand at different rates with resulting changes in some clearances during this period. These design criteria result in minor noises which your 929 and MPV customers may have noted.
Mazda wishes Mazda's Servicing Dealers to assure its owners that these minor noises will not, in any way, affect the reliability, functioning or long term durability of their V-6 engine.
We have experienced no failures related to this notice condition with this type of Mazda V-6 engine in the subject vehicles during our extensive laboratory and real-world test.