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Home >> Mazda >> 1979 >> B2000 Base >> Repair and Diagnosis (Single Page) >> General Information >> Basic Trouble Shooting >> Gasoline & Diesel Engine Trouble Shooting >> Diesel Engine Trouble Shooting >> Vacuum Pump Diagnosis >> Excessive Noise

Excessive Noise

Loose screws between pump and drive assembly.
Loose tube on pump assembly.
Valves not functioning properly.

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