Why is Dongfeng Xiaokang water pump always broken?

Unstable idle speed: pump failure will increase pump rotation resistance. Because the water pump is connected with the timing belt, the increase of the rotation resistance of the water pump will directly affect the rotation of the engine. When idling, the speed jumps after starting, which is more obvious in winter, and even causes flameout;

Noise at the engine: this kind of sound is a rotating friction sound, similar to the sound of "ChengChengChengCheng". This sound can be accelerated with the rotation of the engine, and the volume will change accordingly. This kind of noise will generally become more and more obvious with the aggravation of the fault. An experienced mechanic should be able to hear it. But a little bit, perhaps because it is too complicated to replace the water pump, they all say nothing, and as a result, there are many problems;

Cooling system failure: this is a series of phenomena, all related to the water pump, but not necessarily a complicated problem.