How to expel the airlock?

Anna Mikhailova
Anna Mikhailova
December 1, 2014
How to expel the airlock?

If the engine warms up after a cold start, then most likely there is an airlock in the cooling system. It is necessary to get rid of it. In order not to go to the car shop for this, you can delete it yourself using one of the methods below.

Method number 1

Before expelling the airlock from the cooling system using this method, it is necessary to carry out a number of preparatory works. First, place the machine on a flat surface. Then prepare a few keys - they will be needed later to remove the clamp. After that, wait until the engine cools down (about 10-15 minutes), and then proceed to work:

  1. Take the key and use it to loosen a little, and then slide the collar located on the nozzle that comes from the cooling system.
  2. After that, air will gradually start to leave the tube, which will be indicated by a sound resembling a hiss.
  3. As soon as the antifreeze (coolant) is flowing from the nozzle, it will be necessary to return the hose clamp in place and fix it securely.
  4. Now you just have to fill the tank with antifreeze to the mark "MAX", and then you can check the engine.

Method number 2

You can get rid of the airlock with this method if the engine of your car has a working volume of 1.6 liters. Indeed, in this case, the airlock is usually located at the highest point - the throttle node. To remove it from a node, do the following:

  1. Remove the plastic cover on the motor.
  2. Then locate the throttle assembly hose and remove the hose clamp.
  3. Start blowing into the nozzle until antifreeze pours out of it, then quickly reinstall it and fix it.

Method number 3

There is another way, but two people have to do the work.

  1. Install the car hood up (on the high curb, overpass or elevation).
  2. Fill up to the top of the expansion tank with coolant.
  3. Unscrew the screw on the radiator to bleed air.
  4. Turn in the cabin to the maximum level of the stove.
  5. One person gets behind the wheel and starts to gaze slightly. Another person is watching the radiating fluid. It is necessary that bubbles cease to appear in it.
  6. When a clean antifreeze begins to flow, the screw is screwed back, and the required amount of liquid is poured into the expansion tank.

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