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Home >> Mazda >> 1991 >> 626 LE, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System/Component Tests >> Exhaust Gas RECIRCULATION (EGR) System >> EGR Modulator Valve (Federal Non-Turbo)
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EGR Modulator Valve (Federal Non-Turbo)

Remove EGR modulator valve. Plug No. 1 port and connect a vacuum pump to No. 3 port. See Fig 1 . Blow into exhaust gas port. Operate vacuum pump and verify vacuum is held. Release exhaust port and verify vacuum is released.

Fig 1: EGR Modulator Valve (Federal Non-Turbo)
G90H18389Courtesy of MAZDA MOTORS CORP.
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