Check the functioning of the cooling system and the coolant frost. Fluid Replacement

1. Many serious violations in the work related to the engine cooling system fault. If the car is equipped with an automatic transmission, its function and service life are also directly related to the operation of the cooling system.
2. Check the cooling system must be done when the engine is cold, so it's best to do it before the first day of the current trip or not earlier than three hours after the engine is switched off.

3. Slowly, being careful in case the engine is not quite cool, remove the surge tank cap. Thoroughly rinse it inside and out with fresh water. Check the gasket (1) of the cover (2). The low level of coolant may be due to improper HERZ-TS cover. Also wash the filler neck. The presence of traces of corrosion in the filler neck means that the cooler should be replaced. Coolant within the radiator should be relatively clean and transparent. If it has a brownish color, drain system and fill in her new cooler.

4. Carefully check the radiator hoses and heater hoses, which have a smaller diameter. Check the coolant hoses over the entire length, making replacement of any cracked, swollen or worn hose. Cracks are easier to spot when you squeeze the hose by hand. Pay special attention to the clamps that hold the hose on the components of the cooling system. These collars can cut or pierce hoses that lead to the leakage of the coolant.

5. Ensure the reliability of fastening of all hose connections. Leaking coolant is usually manifested in the form of white or rust-colored deposits in breach of the seal. If your car uses a wire-type clamps, then maybe it makes sense to replace them with collars of screw type.
6. Use compressed air or a soft brush, clean the front of the radiator (and the air conditioning condenser, where it is available). Remove all insects, leaves and other foreign objects trapped in the cooling fins. Be very careful not to damage the edges and do not cut your fingers on them.
7. If the coolant level is constantly falling, and you do not find any leaks should be tested pressure radiator cap and the entire cooling system.
Perceptible leakage of coolant and / or the presence of oil in the liquid as well as white cloud in the exhaust indicate a defect in the cylinder head gasket.

1. Gently warm up the engine so that the upper radiator hose is hot. When measuring the concentration of antifreeze fluid temperature should be approximately + 20 ?� C.

When the engine is hot plug the expansion tank should be opened with caution. There is a risk of burns! It is necessary to put on a cloth cap. The stopper is only open at a liquid temperature not more than + 90 ?� C.

2. Carefully unscrew the bottle.

3. Dial liquid with a blower hydrometer.

4. Typically, a sufficient concentration of antifreeze that protects the system to a temperature of -25 ?� C, in particularly cold climates to -35 ?� C.

1. To remove the coolant, place pan under the radiator and remove the radiator drain plug.
2. Completely remove the old fluid from the system is impossible (without complete disassembly of the engine), so all volumes listed in the Specifications, are conditional. In practice, you can pour in about 2/3 of the prescribed amount of liquid.
3. When refilling the system with fresh anti-freeze to the expansion tank, place a label indicating the concentration of the brand of antifreeze and the date of replacement. Any subsequent replenishment system (up to the planned replacement) should only be given liquid.

Refer to the material specifications in the beginning of Chapter.

If necessary to protect the engine temperature -25 ?� C antifreeze concentration in the coolant should be 40%. If necessary protection to a temperature -35 ?� C antifreeze concentration should be 50%.

If a higher degree of protection against freezing, it is possible to increase the concentration of antifreeze up to 60%. Such a concentration will provide protection up to -40 ?� C. 16 If the concentration is increased to a higher level, the degree of protection of the engine begins to decrease and, in addition, the properties deteriorate heat sink cooling.

1. If, after replacing the liquid engine overheats, the cause is likely presence of air pockets in the system. These plugs do not allow fluid to circulate through the entire system. They are the result of too hasty refueling system.
2. If you feel that the system has air pockets, especially at a time try to compress all visible hoses. You will immediately determine a hose filled with liquid or air. Typically, all the air tube disappear after the first (after replacement fluid) starting the engine.
3. With the engine is warm, turn on the heater and fan. Warm air must flow into the interior in sufficient quantities. If the supply air temperature is low, the cause is probably the airlock.
4. Consequences of the appearance of air pockets in the system can be very serious (not just a reduction in the efficiency of the heater). Most plug can stop the circulation of the fluid inside the engine. In order to make sure that there are no traffic jams inside the motor, touch the upper radiator hose when the engine is running - it should be hot. If the hose is cold, this indicates the presence of air pockets in the engine or a faulty thermostat.
5. If you can not get rid of the air pockets, allow engine to cool completely, remove the expansion tank, try to squeeze the hoses. If this does not work, all drain coolant into a clean container and re-charge the system with the same liquid, following the recommendations above.