Publish Time: 2019-09-11 Origin: Site
The engine is underpowered and continuously exhausts black smoke. Most or all cylinders of the engine have too much fuel supply. The mixing ratio of fuel and air is imbalanced. The combustion is severely deficient in oxygen. Diesel fuel is not completely burned. The suspended free carbon elements follow. Exhaust gas is discharged together. If the exhaust pipe is discharging black smoke intermittently, accompanied by a \"sudden\" sound, it means that the combustion of individual cylinders is not complete. The main reasons are as follows:
1. Improper commissioning of the fuel injection pump results in excessive fuel supply and incomplete combustion.
2. The injection quality of most injectors is poor.
3. Irregular fuel supply.
4. The opening height of the intake valve is reduced and the opening time is delayed, resulting in insufficient intake.
5. The air filter element is too dirty or the air filter is installed incorrectly, making the air not smooth.
6. The supercharging efficiency of the supercharger decreases.
7. The fuel quality is too poor.