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Home >> Mazda >> 1995 >> RX-7 Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System/Component Tests >> Emission Systems & Sub-Systems >> Evaporative Control System >> 2-Way Check Valve

2-Way Check Valve

Remove check valve. Connect a vacuum pump to outlet end of check valve (see arrow on valve). Air should flow with about 1.7 in. Hg vacuum applied. Connect vacuum pump to other end of check valve. Air should also flow with about 1.00-1.46 in. Hg vacuum applied. Replace valve as necessary.

Fig 1: Identifying Evaporative Control System Components
G95G33163Courtesy of MAZDA MOTORS CORP.
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