How to remove air from the cooling system

Make sure the cooling system is sealed. It is obvious that the air may not appear just like that: it is a consequence of the fact that the coolant when replacing flooded by the rules of operation of your car, or a sure sign that the system has been torn, through which the coolant flows, giving way to air.

To begin with you should verify that you have enough loose tube drain cap of the cooling system. If everything is in order, it is necessary to carefully inspect the body of the surge tank and look for cracks on the plastic. The next weak link - the actual hoses that unites the entire cooling system: rubber could crack and be covered with cracks from excessively long operating, or its aggressive conditions.

In the worst case, you may find that air gets into the system due to the fact that leaky radiator or the head gasket of the engine block.

When you have verified that the system is sealed, and your efforts will not be wasted, get to work.

Raise the front of the car. You can try to safely Park it front wheels on any hill or raise the front of the car with a pair of jacks. This must be done in order for the screw to remove the air located on the radiator was the highest point of the cooling system and the air freely went there.

Open the heater valve compartment. In order to do this, you just need to put the regulators control the stove into its final position (as if you wanted to warm up the cabin. Also adjust the intensity of the airflow, if your model stove is it provides a middle position.

Remove the surge tank cap and remove the screw to remove air from the cooling system.

Start the engine and allow the car some time to idle until until the engine warms up, and indicators of the thermostat and the engine speed is not reached working values.

Ask your assistant to sit behind the wheel of your car. In order to get rid of unwanted air in the cooling system, it is necessary to repeatedly intermittently press the accelerator and increasing the revs of the engine to allow coolant to run through the whole system. Meanwhile, you'll pour in expansion tank fluid escaping from the system, and watch disappeared from it air bubbles.

Also ask your partner to watch the work of the stove: if, after a few taps on the gas pedal at idle it will start to consistently carry out its functions, that is feeding the hot air into the cabin, consider your mission accomplished.

Tighten the screw to remove air and allow the vehicle to work in a quiet mode at idle for a few minutes.

Pour coolant into the surge tank below the level reached a maximum, and then tightly close the lid of the tank.

Operate the vehicle another minute. Make sure that all caps and plugs are tightly twisted, and turn off the engine.