Engine system, cooling system fault diagnosis

In the failure to eliminate overheat, need to remember that oil sump oil too full can improve the oil temperature, and transferred to the oil cooler cooling system.

1) the function of the temperature sensor must be correct Because any high temperature overheating will cause severe damage to the piston and cylinder liner.

2) engine thermostat must run correctly To ensure that the engine is running at optimum temperature scope, hot or too cold will shorten the life of the engine, thermostat control the temperature of the cooling fluid, when the coolant temperature is lower than the operating temperature, thermostat closed, at this point, the coolant from side channel flows into the water pump; When coolant temperature is lower than the operating temperature, thermostat closed, at this point, the coolant from side channel flows into the water pump; When cooling temperature rises to a certain extent, two thermostat opens at the same time, at the same time to the by-pass pipe cooling fluid are being subjected to constraints; In the engine operating temperature, thermostat opens, by-pass valve shut down.

Note: no thermostat engine may not work. When coolant channel resistance is small, cooling fluid is not restricted by side channel directly to the imported pumps, this will cause the engine from overheating