If the engine compartment is dirty, do you need to clean it?

If the engine compartment is dirty, do you need to clean it?

First of all, it is necessary to clean the engine compartment.

As for the reasons, they will be explained below. First let’s talk about what everyone is concerned about: How to clean the engine compartment?

How to clean the engine compartment correctly?

To clean by yourself, car owners need to prepare: rags, basins, plastic wrap, cleaning agent for the exterior of the engine compartment, large and small brushes, and wait for the engine compartment to cool down before starting the cleaning work.

1. First, wrap the circuit interface with plastic wrap (if you have replaced the spark plug, wrap the ignition coil securely). Pay attention to the battery cable interface, fuse box, and engine air inlet. These three parts cannot be Water has entered.

2. Use a rag to remove the dust and other dirt in the cabin, and then use detergent with a brush and rag for deep cleaning;

3. Finally, use a basin to collect water and dip the rag into it. Sprinkle some water but not too much, then wipe the engine compartment clean and let it dry naturally;

4. After drying, spray some line protective agent on the engine compartment to delay line aging.

Old car wiring may be aging. Once the rubber ages, the sealed and protected wiring harness will be exposed. Never flush it with a high-pressure water gun. This will easily damage the components in the engine compartment. If the sealed pipeline ages, In this case, it is easy to cause water to enter some sensors.

If you think it’s too much trouble and don’t have time, or you’re not confident about yourself, Lungu still recommends that you go directly to a professional 4S shop for cleaning, which saves worry, effort, and money.

Where does the dirt in the engine compartment come from?

The sludge formed by mixing evaporated engine oil and dust

In the engine's high temperature and high pressure environment, part of the engine oil will evaporate and enter the engine compartment through the gap in the valve cover gasket. It combines with the dust in the engine room to form sludge, making the engine look dirty.

A small amount of engine oil evaporates under specific conditions

Aika Automobile once conducted an experiment and used the Ayak method to test the evaporability of two synthetic engine oils with the same viscosity index. The evaporation rates of these two oils were found to be between 4% and 9.8%.

In other words, in a natural circulation environment of 250°C, 100 grams of engine oil evaporates 4 to 9.8 grams in one hour. Although the actual situation is not that exaggerated and the engine is more sealed, a small amount of engine oil will still escape in the form of steam.

Why do you need to clean the engine compartment? What are the benefits?

1. If the engine compartment is not washed for a long time, the sludge will accumulate in it, which will reduce the heat dissipation of the engine radiator. At this time, the air-fuel ratio (the mixing ratio of gasoline and air) may be out of balance, and the power It will decrease. In severe cases, it will cause "adhesive wear" and increase the risk of cylinder pull. In addition, the circuit will also age and easily cause a short circuit.

2. Removing the sludge covering the engine room can reduce the risk of spontaneous combustion.

3. Protect the lines and oil pipes in the engine compartment to prevent rubber parts from aging and cracking, metal rust and dirt, etc.;

4. After cleaning the engine compartment, look at your heart Comfortable, if you can apply a layer of maintenance agent on the surface like the 4S shop does, it will also prevent the engine compartment from getting dust and keep it fresh for a long time.

Rungu summary:

Old car lines may be aging and must not be washed with a high-pressure water gun. Therefore, among the cleaning methods I told you above, it is recommended that both new and old cars be cleaned first. Wrap the circuit interface with plastic wrap.

Although the wiring inside the engine compartment has been waterproofed, if it is slightly cracked or aged over time, its waterproofing performance will be reduced, just in case it is still possible. It doesn’t take much time to wrap it up.

So don’t worry about whether it can be washed directly with water. Our ultimate goal is to clean the car safely.