启动发动机时水箱向外大量喷水。这是什么原因？ Radiator Spray Water When Engine Starts

水气互窜引起的喷水.Water spray caused by the mutual?movement of water and gas.

故障原因：气缸垫烧蚀；气缸盖与机体结合面翘曲变形；气缸盖、气缸套裂损；气缸盖螺栓松动；空气压缩机气缸垫或气缸盖损坏漏气。

?The cylinder head gasket is ablated,the joint surface of the cylinder head and the engine body is warped and deformed,the cylinder head and cylinder liner are cracked,?the cylinder head bolts are loose,the air compressor cylinder head gasket or the cylinder head is damaged and leaking.

故障诊断：当气缸内高压气体通过裂纹或空隙窜入冷却系水套时，使经进水管流入散热器上水室内的水流受到剧烈冲击，从而引起散热器加水口喷水。

When the high-pressure gas in the cylinder rushes into the cooling water jacket through cracks or gaps, the water flowing into the upper water chamber of the radiator through the water inlet pipe is severely impacted, causing water spray at the water inlet of the radiator.

故障处理：更换烧蚀的气缸垫，找出烧气缸垫的原因并予以排除；焊补裂损的气缸盖；更换裂损的气缸套；按规定顺序和扭矩拧紧气缸盖螺栓。另外，还应检查油底壳内机油是否已渗入水分，若已渗水，应更换机油，并彻底清洗润滑油路。

Replace the ablated cylinder head gasket, find out the cause?and eliminate it,?weld and repair the cracked cylinder head,replace the cracked cylinder liner,?tighten the cylinder head bolts in the specified order and torque. In addition, check whether the oil has penetrated into water. If it has penetrated, the oil should be replaced and the lubricating oil circuit should be thoroughly cleaned.

水流不畅引起的喷水?Water spray caused by poor water flow

故障原因：水箱散热器芯管堵塞；水泵进水胶管内层脱胶或过软吸瘪。

The radiator?core tube?is blocked,the inner layer of the water inlet hose of the water pump is degummed or is too soft and collapsed.

故障处理：清洗或更换堵塞的散热器芯管及水泵进水胶管。

Clean or replace the clogged radiator core tube and water pump inlet hose.

水温过高引起的喷水?Water spray caused by excessive water temperature

故障原因：水套内水垢太厚；风扇叶片装反或传动带打滑；水泵叶轮损坏不工作；供油或点火时间过晚；冷却水循环不畅；发动机长时间超负荷工作等。

The scale in the water jacket is too thick,the fan blades are installed reversely or the transmission belt is slipping,the water pump impeller is damaged and not work,the oil supply or ignition time is too late,the cooling water circulation is not smooth,the engine is overloaded for a long time.

故障诊断：当发动机过热、冷却系水温过高时，水便产生沸腾，造成散热器加水口向外喷水。其特点是：冷机时不喷水，热机时喷水；水温越高，喷水越急；改变发动机转速时喷水现象无明显变化。

When the engine is overheated and the water temperature of the cooling system is too high, the water will boil, causing the water inlet of the radiator to spray water outward. Its characteristics are: no water is sprayed when the engine is cold, and water is sprayed when the engine is warm; the higher the water temperature, the more urgent the water spray; the water spray phenomenon does not change significantly when the engine speed is changed.