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Home >> Mazda >> 1988 >> B2600 Base, 2D Pickup Extra Cab >> Repair and Diagnosis >> Engine Performance >> System >> EGR System - Piston Eng >> Component Testing >> EGR Modulator Valve >> B2600
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EGR Modulator Valve: B2600

Remove EGR modulator valve. Plug No. 1 port and connect vacuum pump to No. 3 port. Blow into exhaust gas port. Operate vacuum pump and ensure that vacuum is held. Release exhaust gas port and check that vacuum is released.

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