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Home >> Pontiac >> 1995 >> Firebird Formula, 2D Convertible, Standard >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> Engine Mechanical 5.7L V8 - VIN [P] >> Removal & Installation >> Cooling System Bleeding

Cooling System Bleeding

CAUTION: When removing coolant recovery reservoir tank fill cap on a hot engine, cover cap with shop towels, slowly rotate the cap counterclockwise approximately 1/4 turn. Stop and allow the hissing to stop. After all hissing stops, continue turning counterclockwise to remove the cap.
NOTE: Care should be taken to prevent coolant from splashing onto the opti-spark distributor assembly. Place shop towels between water pump and distributor.
  1. Open air bleed valve on thermostat housing (if equipped). With engine off, add coolant to radiator until solid stream of coolant flows from air bleed valve, then close bleed valve. Fill radiator to base of fill neck. Fill coolant recovery reservoir to full COLD mark. Leave coolant recovery reservoir cap off. With radiator pressure cap removed, run engine until normal operating temperature is reached (radiator inlet hose hot).
  2. With engine idling, Slowly add coolant to radiator until coolant level reaches base of fill neck. Install pressure cap. Add coolant to recovery reservoir until coolant level is about 1" (25 mm) above FULL COLD mark. Install coolant recovery reservoir cap. Check for leaks. Coolant level in recovery reservoir should be check after thermo-cycle has completed (full hot-to-full cold). Add coolant as necessary.