How to fix white smoke from diesel engine?

Nowadays, the diesel engine is widely used in various equipment and becomes an indispensable power machine. In the process of daily use, diesel engine is likely to have a variety of faults. It is necessary for users to understand the causes of various failures and solutions.

Here is the content list:

Do diesel engines have spark plugs？

How to stop carbon build up in diesel engine？

How to fix white smoke from diesel engine?

Do diesel engines have spark plugs？

There are no spark plugs because diesel cars are compression ignition. But the diesel engine has a preheating plug, which helps the diesel engine to ignite. Since the temperature in the combustion chamber is much higher than the spontaneous combustion point of diesel oil (350-380℃), diesel oil ignites and burns by itself. This is the working principle that diesel engine can burn without ignition system.

How to stop carbon build up in diesel engine？

1. Avoid dragging

In order to save fuel, some drivers always drive at high gear and low speed, especially when climbing. As a result, the diesel engine load is too large and the cylinder can not be fully burned, resulting in carbon deposition.

2. Replace the spark plug regularly

The spark plug is also the place where carbon deposition is most likely to form, and then the ignition is not smooth, so it is easier to form carbon deposition in the cylinder. 

3. Avoid excessive idle time

Drivers in the north have a habit of hot cars in the morning, which is actually a misunderstanding. In the morning, the car is cold and the idle speed is unstable. You can't drive immediately after starting the automotive engine, but you can't idle until the water temperature is normal. You can drive in half a minute to one minute. Of course, you should avoid overloading the automotive engine when it's cold.

How to fix white smoke from diesel engine?

There are two kinds of white smoke from diesel engine exhaust: gray white smoke and water vapor white smoke.

1. First check the engine temperature. If the temperature is too low, check whether the cooling intensity adjustment devices, such as thermostat, shutter and heat preservation quilt work normally. In winter, white smoke is often emitted from diesel engine after cold start, but it is normal that white smoke can disappear automatically when engine temperature is normal.

2. If the diesel engine temperature is normal and the exhaust pipe is draining steam and smoke, put your hand close to the exhaust port. When the white smoke passes by and there are water drops on your hand, you should check whether there is water in the diesel oil or whether the cylinder pad is burned through, or the cylinder is broken and leaking.

3. The engine power is insufficient, the exhaust pipe discharges the gray smoke, generally the fuel supply time is too late, so the fuel supply time should be checked and adjusted.

4. Check the spray quality of the injector. First of all, use the method of single cylinder oil cut to find out the defective cylinder. Remove the injector is still connected to the original high-pressure oil pipe outside the cylinder, start the operation of the diesel engine, observe the spray quality. If the spray quality is poor, check and adjust the injector and replace the injector when necessary.

5. If the engine is white smoke when it is just started and black smoke when the temperature rises, it is usually caused by too low cylinder pressure.

When you buy a diesel engine, you need to know a lot about it. If you want to know anything about it, you can contact XXX company. We will provide you with considerate service.