Flushing - Radiator Removed
1. Backflush radiator with radiator upside down. Position a high-pressure water hose in lower hose location and backflush.CAUTION: Radiator internal pressure must not exceed 138 kPa (20 psi). Damage may result.
2. Remove water thermostat housing and water thermostat.
3. Backflush engine. Position high-pressure hose into engine through engine return and backflush engine.