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Home >> Mazda >> 1971 >> 616 Eng CD NA, Automatic Trans >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> MAZDA Air Injection System (Piston Engines) >> Inspection & Testing >> Vacuum Switch

Vacuum Switch

Apply vacuum to switch and connect circuit tester. Switch should be ON when vacuum is 2.7 in. Hg. or more and OFF when vacuum is 0 to 2.7 in. Hg.

NOTE: If accelerator, speed, clutch or vacuum switch is defective this would cause irregular ignition timing and a rough idle.
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