1 Avoid impact on the engine compartment
Whether you wash the car yourself or go to a car wash shop, when washing the car, open the engine compartment of the car, then use a pressurized water gun to spray the engine compartment. This type of behavior can easily short out the internal parts of the generator, and the consequences are no longer comparable to paying for a car wash.
2 Avoid saving too much water
Excessive dirty water is one of the root causes of car scratches. You can buy dispersed water jets on the market, which can wash away the sand layer on the surface of the car and then wipe it clean. It's a more scientific way to wash your car. When using high-pressure water cannons, you must also remember that Guo Yuming is violent. Some high pressure water cannons can destroy directly the paint surface of the bodywork.
3. Selection of cleaning agents
Cleaning agents with more foam are not better. This is one of the common misunderstandings. In many car wash shops, dust is removed when washing the car and then a cleaning agent is sprayed onto the car, which produces a lot of excess suds. In fact, it will cause great damage. the car body over a long period of time. After a while, you will notice that the shine of the bodywork is much less than before. Therefore, choosing a mild detergent is the best way to wash your car, without hurting your hands or the car.
The method is as follows
1. The exterior of the engine can be cleaned, but it should be cleaned when cool. Engine temperature is too high. Touching cold water for a while may cause deformation or evenme a crack in the cylinder. The large amount of water vapor generated will also cause excessive humidity in the engine compartment, also affecting some electrical components. is necessary to prevent high temperatures from burning your hands.
2. Never leave the highway, because the car will soon be washed. After driving at high speed, the car's brakes and engine are in the heat dissipation stage. At this point, wash the car and use cold water to rinse the brake rotor. This could cause the slightest shaking of the steering wheel or, in the worst case, cause the braking system to fail, thus affecting driving safety.
3. Although the motor, fuse box and circuits have been waterproofed, do not use a high-pressure water gun to flush them for a long time. There will be a prompt on the fuse box in the engine compartment of certainnes cars to prevent the high pressure gun from flushing here. Although it has been waterproofed, rainwater is generally no problem, but the pressure of the high-pressure water gun is relatively high. Just in case, try to avoid the on-board computer and the outer area of the fuse box.
4. For a car over three years old, or a hybrid car, when cleaning the engine, you should use shrink film to wrap the wiring harness and fuse box inside the engine, because the car is so old that these plastic parts have started to age and their waterproofing has started to degrade, so they need to be protected before washing.
5. If the vehicle is older (more than five years), it is not recommended to clean the engine with water, as the car cannot start due to poor sealing. Further cleaning the engine with water. should notbe too frequent, otherwise it would accelerate aging.
6. The car fuse cannot be exposed to water. If it is washed directly with water, it will easily cause a short circuit and burn the circuit. When we clean the engine compartment, still try to avoid washing the fuse box directly with water.
Detailed information
Clean the air filter
The air filter is directly related to the performance of the car engine during the driving. The Guangben dealership manager told reporters that the air filter will not be clogged if the vehicle is driven only in the city, but if the car is driven on dusty roads, special attention should be paid to the air filter. problem with cleaning the machine.
If the air filter is clogged or contains too much dust, the engine will have poor air intake and uA large amount of dust will enter the cylinder, which will accelerate the carbon deposition in the cylinder. , resulting in poor engine ignition and insufficient power, the fuel consumption of the vehicle will naturally increase. If you drive on a normal city highway, the air filter should be checked when the car has covered 5,000 kilometers. If there is too much dust on the filter, you may consider using compressed air to blow from the inside of the filter element. to blow the dust. However, the compressed air pressure should not be too high to avoid damaging the filter paper. He told reporters that water or oil should not be used when cleaning the air filter to avoid oil and water contaminating the filter element.
Remove sludge from the throttle valve
There are several reasons for the appearance of sludge at the throttle valve. Some ofAmong them are that the exhaust gases from fuel combustion form carbon deposits at the throttle valve. that it is not filtered by air. The impurities filtered by the cleaner remain at the level of the butterfly. If there is too much sludge, air intake will cause air blockage, resulting in increased fuel consumption.
He said the throttle valve should be cleaned when the car has done 10,000 to 20,000 miles. When cleaning the throttle valve, you must first remove the intake pipe to expose the throttle valve, remove the negative electrode from the battery, turn off the ignition switch, straighten the throttle shutter, spray a small amount of "carburetor cleaner" into the throttle valve, then use a polyester cloth or "non-woven cloth" to carefully scrub deep inside the throttle and out of reach, you canUse a clip to hold the cloth and scrub carefully. After cleaning, install it. air intake pipe and battery negative electrode and turn on the ignition!
Clean carbon deposits on the fuel injector
Because the combustion chamber is prone to carbon deposits, and carbon deposits can cause starting difficulties; blocking oil passages and fuel injection. Deformation and poor atomization will naturally increase fuel consumption.
To clean the combustion chamber, a special carbon remover can be used to soften carbon deposits on the combustion chamber and fuel injection nozzle and separate them from the surface of the parts, then remove the softened carbon. deposits. This method of carbon removal is very effective compared to the previous direct wiping, it has the advantage of not damaging the ssurface of the parts, and the carbon removal efficiency has also been greatly improved.
Reference materials:
Baidu Encyclopedia Engine Maintenance Precautions