Air locks form in the cooling system of a car, as a rule, after replacing antifreeze, since there may be spaces in it that are not filled with coolant. Trapped air interferes with its circulation and causes the engine to overheat. Modern water pumps are generally capable of removing air from the system, but if this does not happen, then intervention is necessary.
Necessary
Screwdriver
Instructions
Step 1
The task of removing the airlock is made easier by looking for it at the highest point of the heating system, since air can only be there. Open the hood and after the engine has cooled down, remove the cap from the expansion tank.
Step 2
Open the heater radiator valve fully. If you are the owner of a VAZ, loosen the clamp of the stove top pipe, then slide the pipe and remove the air through the hole. As soon as antifreeze starts to flow out, put everything in place and tighten the clamp. The next step is to release the tightening of the clamp on the intake manifold pipe, which is located just below the carburetor. Here, the airlock is removed in a similar way.
Step 3
On cars equipped with injection engines, air locks are expelled by disconnecting the nozzle on the throttle assembly using an already known technology. You must complete the removal of the air lock by adding coolant to the expansion tank.
Step 4
It is easier to pour antifreeze through the upper pipe of the stove with the tap open. Pour in antifreeze until it flows out of the stove. Put the pipe back in place and there will be no place for the plug in the pipe.
Step 5
As the engine warms up, add coolant as needed. Then you need to drive the front wheels to some elevation (you can on the curb) and add antifreeze. Leave the engine running to warm up and open the stove tap, then set the engine speed within 2000-2500. At the same time, vigorously squeeze and unclench the upper piping from the radiator. You can complete this manipulation when an antifreeze gurgle is heard in the system.
