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Home >> Mazda >> 1990 >> 929 Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System/Component Tests >> Fuel Evaporation System >> Evaporation Line

Evaporation Line

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Disconnect hose leading from charcoal canister to fuel tank and connect a vacuum pump to the hose. Apply vacuum and note if vacuum is held. No vacuum should be held. If vacuum is held, test check valve, cut-valve and evaporation hose for blockage.