Air in the cooling system can cause many problems. In particular, due to a small airlock, the car's stove will not work well or will not work at all, and in the worst case, the engine will constantly overheat. However, you can get rid of such scourge as air in the cooling system using simple household methods, having only half an hour of free time and basic devices.
It is necessary
- - coolant
- - a small hillock or a pair of jacks
- - assistant
Instructions
Step 1
Make sure the cooling system is tight. Obviously, air in it cannot appear just like that: this is either a consequence of the fact that the coolant was poured during replacement not according to the rules for the operation of your car, or a sure sign that a hole has appeared in the system through which the coolant flows out, giving way to air …
To begin with, it is worth checking if the drain plug of the cooling system is tightly tightened. If everything is in order with her, you should carefully examine the housing of the expansion tank and look for cracks in the plastic. The next weak link is the actual hoses that unite the entire cooling system: the rubber could dry out and crack from excessive use or its aggressive conditions.
In the worst case, you may find that air is entering the system due to a leak in the radiator or cylinder head gasket.
When you are convinced that the system is sealed, and your efforts will not be wasted, get to work.
Step 2
Raise the front of the vehicle. You can try to park it safely with the front wheels on any hill, or raise the front of the car with a couple of jacks. This must be done in order for the air vent screw located on the radiator to become the highest point of the cooling system, and the air can freely escape there.
Step 3
Open the heater tap. In order to do this, you just need to put the stove control knobs in the extreme position, as if you wanted to warm up the interior. Also set the intensity of the blowing, if your stove model provides this, to the middle position.
Step 4
Unscrew the cover of the expansion tank and remove the screw to remove air from the cooling system.
Step 5
Start the engine and let the car idle for a while until the engine is warmed up and the thermostat and engine speed readings reach operating values.
Step 6
Ask your assistant to drive your car. In order to get rid of unwanted air in the cooling system, it is necessary to periodically press the gas pedal several times and increase the engine speed to allow the coolant to run throughout the system. In the meantime, you will refill the expansion tank with fluid leaking from the system and see if air bubbles have disappeared from it.
Also ask your partner to observe the operation of the stove: if, after several clicks on the gas pedal at idle, it starts to perform its functions stably, that is, to supply hot air to the cabin, consider that your mission is completed.
Step 7
Replace the bleed screw and allow the vehicle to quietly idle for a few more minutes.
Step 8
Fill the expansion tank with coolant until the level reaches the maximum, then close the tank cap tightly.
Step 9
Let the car run for another minute. Make sure all caps and plugs are tight and shut off the engine.
