How to drain coolant? draining the cooling liquid (VAZ, Nexia)

For any motorist, draining the coolant should not be a problem. It is necessary to drain the liquid in such cases:

• before replacing a car radiator;
• installation of a new thermostat;
• seasonal fill of new coolant.

Antifreeze or antifreeze is contained in the radiator and in the engine cooling system, so the operation is carried out in two steps. Consider the example of domestic cars, since the owners of expensive foreign cars are unlikely to independently deal with such matters.

How to drain fluid from a radiator

• we turn off the engine and let it cool down for 10-15 minutes, put the interior heater knob in the extreme right position to the maximum to open the heater drain cock;
• we unscrew the cap of the expansion tank, although this is not necessary, since there is no consensus on this issue in the instructions - antifreeze can splash and drip the engine;
• under the hood there is a drain plug from the radiator, it must be unscrewed very carefully so as not to flood the generator with antifreeze;
• we wait about ten minutes until the antifreeze drains.

Draining antifreeze from the engine

• under the ignition block module there is a drain plug of the cylinder block, we find it and unscrew it with a ring wrench;
• wait ten minutes until everything flows out;
• wipe the cork, look at the condition of the sealing rubber bands, if necessary, change and twist back.

Do not forget that antifreeze is a chemically active substance, it has a sweet smell and can attract pets or even small children, so we drain it into containers that need to be tightly closed and disposed of. You can not just pour antifreeze on the ground.

When everything is drained, fill in a new antifreeze or antifreeze diluted with distilled water. It is necessary to use only the brand recommended by the manufacturer, since various additives can lead to rust in the radiator and in the cylinder block.

Antifreeze is poured into the expansion tank, to a level between min and max. Sometimes air pockets can form. To avoid them, you can loosen the pipe clamp and disconnect the hose from the intake manifold fitting. When, after pouring, coolant begins to drip from the fitting, put the hose in place and tighten the clamp.

It is necessary to pour antifreeze into the tank gradually, from time to time covering the lid and probing the upper radiator pipe. With such movements, we counteract the formation of traffic jams. When the antifreeze is filled, we start the engine and turn on the stove to the maximum. If heat is not supplied, then air pockets remain, this threatens to overheat the engine.

Loading…