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You're simply going to have to have it removed and replace it. That nipple is at the lowest point in the system and there is no other way to drain it unless you have the system power flushed.
It's not easy
This should not be necessary on this vehicle.
Air Conditioning Vacuum Pump.
What is the radiator capacity for CRV 1998
I need a cooling system diagram for a 1999 dodge intrepid 2.7
The coolant air bleed valve is located on the top of the thermostat bypass pipe/heater pipe assembly. Close the valve once a continuous stream of coolant is expelled from the valve.
Park your car on an inclined surface (15-20o). Start the car and idle it for 5-10 minutes. You can rev it couple times too.
Motor cooling system? The engine cooling system consits of the water pump, radiator, hoses, cooling fans, etc.Motor cooling system? The engine cooling system consits of the water pump, radiator, hoses, cooling fans, etc.
Not necessary on this vehicle.
Service the cooling system. Drain the coolant and replace the thermostat which is more than likely stuck open. Pour in a 50/50 mix of antifreeze and distilled water. Bleed all air from the system.
The cooling system thermostat can be located by looking down at the thick fat hose that comes out of the top of radiator. Visually follow this hose down to where it attaches by a clamp to a metal housing on the engine block. The cooling system thermostat is located within that housing.