Heater Core Backflushing

Heater Core Backflushing

1. WARNING: If equipped with fire suppression system, depower the system. For important safety warnings and procedures, refer to Fire Suppression System.

WARNING: Do not open the cooling system while it is hot or while the engine is running. Failure to follow these instructions may result in personal injury.

Partially drain the cooling system. For additional information, refer to Cooling System Draining, Filling and Bleeding.

2. NOTE: For additional information, refer to the cooling system flusher manufacturer's operating instructions for particular vehicle hook-up.

Use an appropriate cooling system flusher to backflush the heater core. Use Premium Cooling System Flush VC-1 or equivalent meeting Ford specification ESR-M14P7-A. Flush with water thoroughly after using VC-1 or equivalent prior to refilling the cooling system.
3. Fill and bleed the cooling system.

4. WARNING: If equipped with fire suppression system, repower the system. For important safety warnings and procedures, refer to Fire Suppression System.

If equipped with fire suppression system, repower the system.