With the booming car market, many people have also bought their favorite cars. Buying a car is easy, but maintaining it is difficult. There are always a lot of car owners complaining that their cars are prone to breakdowns. At the same time, some car owners have been maintaining the car with the wrong knowledge of car use and maintenance, resulting in the car malfunctioning that should not appear. Next, we will summarize some misunderstandings of car maintenance for your reference.
First: Blindly remove the engine thermostat
Some car owners will blindly remove the thermostat because of high engine temperature. The coolant can only carry out large circulation, and the cooling intensity cannot be adjusted. It is difficult to ensure that the engine works at a suitable temperature. Instead, the engine often works at a low temperature, resulting in a decrease in engine power, accelerated wear, and increased fuel consumption.
Correct method: If the engine temperature is still high after the engine thermostat is repaired or replaced, other parts of the cooling system should be overhauled.
Second: The engine temperature is not afraid of high but not low.
When the engine often works in a low temperature state, it will cause the engine power to drop, the wear and tear will be accelerated, Fuel consumption increases.
Suggestion: The vehicle should be driven at the normal temperature specified in the vehicle instruction manual to ensure the service life of the engine.
Third: The tighter the water pump fan belt, the better
When the belt is too tight, it will not only stretch or break, but shorten the service life of the belt , but also due to excessive tension, resulting in deformation and bending of the generator shaft, water pump shaft and early damage to the bearing.
Suggestion: The tightness of the fan belt of the automobile engine should meet the technical requirements. Generally, the deflection of the normal belt should be 10-15mm.
Fourth: The engine heats up at idle speed
When the engine heats up at idle speed, due to the low speed, the oil pump cannot pump the lubricating oil quickly. Press into each lubricating surface, and the oil pressure is also low, so that the moving parts of the engine work in the state of dry friction or semi-dry friction; the fuel is poorly atomized at low temperature, so that the unburned fuel (air mixture) escapes into the crankcase and flushes The oil film on the cylinder wall will also accelerate the wear of the parts.
Suggestion: When the engine is started for a few seconds, apply a quick idling warm-up to improve the lubricating conditions of the engine.
Fifth: use a blowtorch to bake the oil base
Many car owners like to use a blowtorch to bake the oil base in winter. The additives in the oil will undergo chemical changes and lose their original properties, and will also cause the oil to be cemented and the oil bottom to be deformed, which is easy to cause fire.
Suggestion: It is necessary to select suitable oil according to the minimum temperature in the local winter. Where possible, it is best to park the vehicle in a garage with thermal insulation.