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Four ways to troubleshoot automobile engine overheating

Update:10 Oct 2020
Summary:

Engine overheating is a common fault, which will cause […]

Engine overheating is a common fault, which will cause the engine's power generation and economy to decrease, and in severe cases, it will damage the parts. Therefore, such faults should be eliminated in time. Take the Santana car as an example to introduce the "four-step method" for troubleshooting the engine temperature.
one look
If the temperature is too high or the temperature indicator light keeps shining, stop and check to see if the cooling water in the water tank is normal, and whether there is any leakage at the water tank, engine water pipe and various joints. If no abnormality is found through the appearance inspection, you can make up the cooling water according to the regulations before continuing driving. If the temperature is still too high after driving for a certain distance, and the parking inspection finds that the cooling water has been reduced a lot, this is mostly due to the loss of the water jacket of the cylinder block due to blisters or perforations. After discovering this fault, repair it and do not take it lightly.
Second touch
When the engine temperature is too high, you can touch the temperature of the engine water pipe and the underwater pipe to judge the fault. If the temperature difference between the two water pipes is large, it can be judged that the thermostat is not working. If you can't buy accessories for a while on the way, you can remove the thermostat for emergency, and replace it immediately after returning to the unit.
Sanfang
If there is air in the cooling system, air resistance will be formed, which will cause poor cooling water circulation and cause excessive engine temperature. The following methods can be used to deflate: Let the engine run at high speed, and gently unscrew the water tank cover until the gas is just released. At this time, some cooling water will flow out with the gas. Repeat this many times until you feel the gas is exhausted ( At this time, the temperature of the upper and lower water pipes will be significantly different when touched by hand). After troubleshooting, add cooling water in time.
Four punches
If the vehicle is driving on a dirt road or muddy road for a long time, some dirt will stick to the radiator. Over time, it will affect the heat dissipation effect and cause the water temperature to be too high. The radiator grille can be blown with compressed air first, and then flushed with a water pipe.