Heater Core Backflushing

Heater Core Backflushing

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

Partially drain the cooling system.

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

Use an appropriate cooling system flusher to backflush the heater core.
3. Fill the cooling system.