Sunday, June 28, 2020

Tire pressure is not too high, not low, to avoid 6 kinds of maintenance mistakes

Many car owners will enter some misunderstandings when it comes to car maintenance, and sometimes small mistakes can cause major problems. Therefore, the editor here introduces several car maintenance misunderstandings, hoping to help the netizens in their daily car maintenance.

Myth 1: The tighter the belt of the pump fan, the better

Too tight a belt will not only make it stretch or break, shortening the service life of the belt, but also cause excessive deformation and bending of the generator shaft and water pump shaft and early damage to the bearings. The tightness of the car engine fan belt should meet the technical requirements. Generally, the deflection of the normal belt assembly is 10-15mm.

Misunderstanding 2: The engine temperature is afraid of high or low

Some people think that when driving, the engine temperature is afraid of high or low. In fact, when the engine temperature is low, it is also very harmful. It should be driven according to the normal temperature specified in the manual of the car to ensure the service life of the engine.

Misunderstanding 3: baking oil bottom with blowtorch

Baking the oil bottom with a blowtorch in winter will not only cause chemical changes in the additives in the engine oil and lose the original performance, but also cause the engine oil to cement and deform the oil bottom, easily causing fire. The best way is to choose the appropriate motor oil according to the local minimum temperature in winter. Where conditions permit, it is best to park the vehicle in a garage with thermal insulation facilities.

Misunderstanding 4: Engine heating at idle speed

When heating at idle speed, due to the low speed, the oil pump cannot press the lubricating oil into the lubricating surfaces quickly, and the oil pressure is also low, so that the moving parts of the engine work under dry or semi-dry friction conditions; Poor atomization causes unburned fuel to enter the crankcase and wash away the oil film on the cylinder wall, which will also accelerate the wear of the machine parts. Therefore, a few seconds after the engine is started, the rapid idle speed should be applied to improve the lubrication conditions of the engine.

Myth 5: Blindly remove the engine thermostat

If the thermostat is removed blindly due to the high engine temperature, the coolant can only be circulated in a large scale, and the cooling intensity cannot be adjusted. It is difficult to ensure that the engine operates at a more suitable temperature. Instead, the engine is often operated at a low temperature, causing the engine power to decrease , Accelerate wear and tear and increase fuel consumption. If the engine temperature is still high after the engine thermostat is overhauled or replaced, the other parts of the cooling system should be overhauled, and the thermostat cannot be removed.

Myth #6: Tire pressure is better than low

If the tire pressure is too high, it will reduce the ground contact surface of the tire, increase the wear and tear, and it is also easy to burst the tire. If the tire pressure is too high, the adhesion coefficient of the tire is reduced, the braking effect during braking is reduced, and the amount of slippage is increased, which causes greater harm to driving safety. If the tire pressure is too low, it is not good, and it will cause tire shoulder wear, tire folding, and increased fuel consumption. It should be inflated according to the standard air pressure marked on the tire, and the inflation amount is generally within ±5% of the standard air pressure.

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