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Home >> Mazda >> 1985 >> GLC Base >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Fuel Evaporation System >> Component Testing >> Water THERMO Valve
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Water THERMO Valve

  1. Remove vacuum hose from upper port of No. 1 purge control valve at canister and run engine at 1500 RPM.
  2. With engine coolant below 122°F (50°C) no vacuum should be felt at hose. With engine coolant above 122°F (50°C) vacuum should be felt at hose if valve is working properly.