How is it that Chevrolet Lefeng water tank is often short of water?

1. The cooling water circulation system is leaking. 2. Where water leakage may occur: a. Water pipe joint or water pipe itself. Inspection method: you can generally see it. If it is not easy to see, you can use colored cooling water (or add some colors, such as ink), and then increase the throttle to 2000-3000 rpm for a period of time, and you can see the leaking place. B, the water tank cover is not tightly sealed. Inspection method: same as above. C, water tank corrosion or interface leakage. Inspection method: same as above. D. The heater tank leaks. Inspection method: only when the warm air is turned on will it leak, and when it is turned off, it will not leak; E, cooling water leakage into the engine, two cases. 1) leaked into the crankcase. Inspection method: the oil turns milky white; 2) Leakage into the combustion chamber. Inspection method: the exhaust pipe emits white smoke. You can check it yourself. If you solve it, you'd better go to a bigger repair shop or a four-S shop. They have special equipment to test.