The following faults may occur in the use of the thermostat water pump pipe:

1. Leakage: The joint of the thermostat water pump pipe may leak due to long-term use or weak connection. Leakage may be caused by loose joints, aging sealing rings or broken water pipes. Leakage will lead to the loss of coolant, affect the heat dissipation effect of the engine, and may even cause the engine to overheat and damage.

2. Blockage: The water pipe of the thermostat water pump may be blocked due to deposits, dirt or air bubbles. Blockage will cause the coolant not to flow smoothly, which will affect the heat dissipation effect of the engine and increase the risk of engine overheating.

3. Rupture: The water pipe of the thermostat water pump may be broken due to external impact, overheating or aging. Rupture may lead to coolant leakage, affect the normal operation of the engine, and may cause damage to other components.

4. Corrosion: The water pipe of the thermostat water pump may be affected by corrosive substances in the coolant, resulting in corrosion of the metal parts of the water pipe. Corrosion will reduce the wall thickness of water pipes and increase the risk of rupture.

5. Aging: The thermostat water pump pipe may be aging due to long-term use or environmental factors. Aging will reduce the elasticity and durability of water pipes and increase the risk of leakage and rupture.

In order to avoid the failure of the thermostat water pump pipe, regular inspection and maintenance are necessary. This includes checking whether the joints of water pipes are tight, checking whether there is any blockage inside the water pipes, replacing the seriously aging water pipes regularly.