The engine cooling system has been normal, suddenly appeared in the running engine tank boil. The reasons caused by the sudden boiling water tank engine:

(1) insufficient cooling water of engine or serious leakage of cooling system.

(2) the thermostat of the parts of the Baotou North running heavy truck is suddenly out of order.

(3) the distributor is carton off, and the distributor shell automatically turns to the direction of delayed ignition time.

(4) the main oil supply device of the carburetor is blocked up, causing the mixture to suddenly dilute. In addition to the temperature rising, it is accompanied by the phenomenon of engine weakness and carburetor tempering and firing.

Because it is traveling in a sudden overheating. At the time of diagnosis, should pay attention to the current dynamic table. If the throttle, ammeter indication is not charging, only in the hands of discharge current 3-5A and the "0" bit intermittent swing, the fan belt is broken. If the ammeter indicates charging, it should be flameout, and the radiator and engine should be touched by hand. If the engine temperature is very high, and the radiator temperature is low, it means that the pump shaft blade is turned off to make the water tank circulate interrupted. If the temperature difference between the two is not large, we should check whether there is a serious leakage in the cooling system.

Driving in the engine water tank suddenly boiling, generally due to Baotou beiben heavy truck parts thermostat main valve off and stuck in the radiator inlet pipe, cooling water of circulation, so that the pressure in the cooling system increases rapidly, when the pressure increases to a certain extent, the sudden impulse valve to change the direction card, suddenly conduction cycle of water, the boiling water will quickly open the radiator cap, and boiling phenomenon. The fault should be overhauled in the north of Baotou.