In the cooling system of the car, sometimes there are various sounds in the form of gurgling, while the effective cooling of the engine and heating of the passenger compartment are reduced. The most common cause of these phenomena is the ingress of air into the cooling system. Air can enter both when changing the coolant and when adding it to the expansion tank. The most unpleasant thing is the depressurization of the system. In the latter case, you need to find where the depressurization occurred and eliminate it. But if the system is in good condition, then the air can be removed in a simple way without draining the coolant.
Necessary
Gloves, screwdriver or wrench
Instructions
Step 1
Find a place where you can place the car with the front wheels on a raised platform. The ideal option is to find a slide and drive the front wheels onto it. Turn off the engine and open the hood. You will need to find the highest point in the cooling system from which you can disconnect the pipe. If the pipes come to the front radiator from above, then this will be the top point. If from below, then, most likely, the upper point will turn out to be either an expansion tank or the joint of the cooling system and the engine. If the upper point is an expansion tank, then you will not need to unscrew anything except the lid of the tank itself, but if the hose and the engine are connected, then you need to do the following operation.
Step 2
Take a screwdriver and unscrew the clamp holding the coolant hose to the pipe. Detach the hose from the nipple and hold it close to the nipple with a slight downward tilt. Better to have someone help you. The partner at this time, while you hold the cooling hose, will start the engine and gas, periodically increasing and decreasing the engine speed.
Step 3
Wait for coolant to flow from the disconnected hose. When a little liquid flows out, the air will come out of the system by itself. Put the hose back on the nozzle with the engine running and flowing fluid. Tighten the clamp. Add a thin stream of liquid to the expansion tank to the required level. Everything, after this operation, the air from the cooling system will be removed.
