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Home >> Mazda >> 1981 >> B2000 Sundowner >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Air Injection >> Testing >> Relief Valve >> All Other Models

All Other Models

Run engine at idle speed. Hold hand under air pump; no air should be felt. Increase engine speed to 4000 RPM. Hold hand under air pump; air should be felt. If relief valve does not respond as outlined, replace air pump assembly.

NOTE: Air pump is serviced as complete assembly only.
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