What is the reason for the sizzling sound after the car starts?

This is due to the fact that the engine oil has not reached the individual parts that need to be lubricated, and the engine has not been affected by adequate lubrication. This sound disappears when the engine oil has completely lubricated the engine or the engine has reached normal operating temperature.

Engine oil is vital to the engine, engine oil is called the blood of the engine, and if there is no engine oil in the engine, the engine will not function properly. Engine oil not only plays a role in lubrication in the engine, but also plays a role in cleaning, sealing, buffering, rust prevention and heat dissipation.

When the engine is running, the engine oil will form an oil film on the surface of each component in the engine, so as to avoid friction caused by direct contact between the various parts in the engine.

If the various parts in the engine are in direct contact and cause friction, it will aggravate the wear of the engine, and it may also affect the engine to cause a large dose of heat instantaneously, which is fatal to the engine.

Engine oil will basically lose its performance after a long period of use, and it is natural that engine oil needs to be changed regularly. If the engine oil is not changed for a long time, it may also exacerbate the wear and tear of the engine.

If the car does not move for a period of time, then the oil will return to the oil pan, which means that the top of the engine, that is, the valve chamber will be less oil, because the valve lacks the sealing and lubrication of the oil, so when the car just starts, you will hear the sound of the bottom of the car, which is a normal situation.

However, in addition to the normal situation, there is a high probability that the engine belt is a problem if the car is started and there is a sizzling noise. First, check the tightness of the engine belt, we can try to clamp the transmission belt with our fingers, and then twist it, note that the operation should be carried out when the engine is cool, and the twist angle should generally be below 90 degrees, otherwise it will be adjusted.

Precautions for car starting.

Whether it's a regular key or a push-button start, don't screw the key directly to start the engine after entering the car. The whole vehicle circuit should be turned on (screwed to the ON gear) first, so that the vehicle can self-test. When the vehicle self-test, the indicator light on the dashboard will light up, and after a few seconds, the indicator light will go off, and then start the engine, at this time the vehicle self-test is completed, and the oil pressure has been established.

Before the engine starts, the battery needs to consume a lot of power, and we should try to turn off the power-consuming equipment in the car to prolong the life of the battery. Nowadays, mainstream cars use maintenance-free batteries, but maintenance-free batteries are only "maintenance-free", and the amount of electricity in the battery is certain, so it is necessary to reduce electricity consumption at start-up to prolong the service life.