1. There is no excessive leakage and loss of coolant

The overheat cooling system circulates normally after overload. When the truck runs out of engine range, the water temperature is close to boiling temperature, and the cooling system can work even if the engine is overheated.

At this time, the engine should be kept idling, no flameout; Cool the radiator surface with cold water to accelerate the cooling. At idle when the temperature drops to about 50 degrees, unscrew the tank cover with a thick soaked towel to cool down. Be sure to check the oil ruler scale is in the normal range.

2. Engine temperature is too high cooling system circulation failure

There are many reasons for the failure of the cooling system circulation, such as the damage of the thermostat, the silicon oil cooling fan, and the fan belt.

First of all, keep the engine in the state of the car, strictly prohibit flameout; Cool the radiator surface with cold water to accelerate the cooling. Usually this kind of cases, the circulating water temperature drop is limited, the engine temperature below 80 degrees, taking intermittent stall, hit the flameout switch sensor or unplug efi system, engine running over with the starter machine, 10 to 15 seconds for a cycle, passive cooling operation, finally check whether oil feet scale within the normal range.

3. Coolant is missing or completely lost, and the engine cooling system is not in a dry - burning state

Engine "dry burn," or running without cooling water, can cause very serious accidents. At this time, any cooling water cooling radiator way is basically ineffective, engine running can not heat.

First of all, in the driving state, you should open the oil filling port and fill the lubricating oil quickly. This is because in the state of complete water shortage, the engine oil will evaporate at a large amount of high temperature and must be quickly supplemented.

The next step is very important, add lubricating oil must be turned off, take any way to let the engine turn off the oil. Simultaneously runs the starter, the passive runs the engine. Lasts 10 seconds, pauses 5 seconds apart, maintains this frequency.

Would rather damage a starter, but also to keep the engine, the greatest extent to avoid sticking cylinder, cylinder and other serious accidents.

When the engine overheats, must the decisive judgment, the prompt disposal, summarizes the following essentials.

1. Judge whether there is cooling water, water shortage or complete water shortage;

2, in addition to completely no water "dry cooking", can not immediately flameout;

3. Pour water over the radiator. It is strictly forbidden to unscrew the water tank cover.

4. Water shortage should be treated separately.

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