Check the functioning of the cooling system
Every year or every 20,000 km
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.
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.
- Slowly, being careful in case the engine is still not completely cooled, remove the radiator cap. Thoroughly rinse the inside and outside with clean water. Also flush the radiator filler neck. The presence of traces of corrosion in the filler neck means that the cooler must be replaced (see. Section Drain, rinse and refill the cooling system). Coolant within the radiator should be relatively clean and transparent. If it has a brownish color, drain system and fill it with new coolant.
- Carefully inspect radiator hoses, heater hoses and 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.
Hoses, as well as belts, tend to fail at the most inopportune moment - in order to avoid the hassles associated with the rupture of a radiator or heater hoses, carefully inspect them, as shown in the figure.
- Make sure of 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.
- 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.
- 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.