After the trial run, the fault was found as the owner said. When you step on the accelerator, you can clearly hear the sound of water flow, and the approximate position of the sound should be in the dashboard or engine compartment. When I opened the lid, I found that there was a "cooing" sound in the Xu Shui pot of the engine when I stepped on the gas pedal. Open the lid of the water tank, and the water in the kettle keeps bubbling. Subsequently, we also found that after the engine water temperature reached normal temperature, the water inlet pipe still had no temperature, indicating that the thermostat was not opened. Buick Hideo Car Repair Case-Li Shifu Car Repair.
I took the thermostat apart and found it was rusted to death. Only after asking the owner did I know that the vehicle had been hit once before, and the radiator of the water tank was replaced, and then no antifreeze was added. Due to the long-term corrosion of water, the thermostat is necrotic. This is, we judge, probably because the engine thermostat is dead and the coolant in the engine can't circulate, resulting in a lot of air in the waterway. The high temperature makes the water storage tank sound like running water. Buick Hideo Car Repair Case-Li Shifu Car Repair.