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Home >> Isuzu >> 1986 >> Trooper II Base, 4D Utility, 2.3 L >> Repair and Diagnosis >> Engine Performance >> System >> EGR Function Testing - Diesel >> Component Testing >> Thermal Vacuum Valve >> P'Up
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Thermal Vacuum Valve: P'Up

Remove thermal vacuum valve from engine and place sensing portion in water, 115-129°F (46-54°C). Blow through hoses connected to valve. Air should pass through. If not, replace valve.