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Home >> Porsche >> 1990 >> 944 S2 Coupe L4-2990cc 3.0L DOHC >> Repair and Diagnosis >> Engine, Cooling and Exhaust >> Cooling System >> Service and Repair >> Cooling System Bleed

Cooling System Bleed

Bleeding cooling system









1. Set heater control lever at "warm" position.
2. Leave heater on "warm" setting and remove bleeder plugs. Add coolant SLOWLY until fluid level in expansion tank is kept at the "MAX" mark constantly.
3. Start engine and run to operating temperature at fast idle speed (until radiator fan has cycled on and off).
If fluid leaving bleeder opening is without air bubbles, insert plug and tighten hose clamp. Check coolant level, adding more coolant if necessary.