metering valve list

Injector FAQ

FAQ: What are the reasons for black smoke?

ERIKC Answer: Poor exhaust

The exhaust of the engine is not smooth and the exhaust resistance is increased. As a result, the exhaust gas cannot be discharged smoothly. Excess exhaust gas remains in the cylinder. The amount of fresh air is insufficient and the charging efficiency is reduced.

muffler, after treatment and other accessories on the exhaust pipe plug

FAQ: What are the reasons for black smoke?

ERIKC Answer: exhaust butterfly valve stuck

Exhaust pipe is blocked, it is easy to cause black smoke, especially when the heavy load is taken, usually with high exhaust temperature, red exhaust pipe, as shown below:

If you suspect that the exhaust is not smooth, you can disconnect the pressurized pipe after the exhaust pipe to test. If it is normal, it means that the pipeline after the exhaust pressure is blocked; if not, check the other.

FAQ: What are the reasons for black smoke?

ERIKC Answer: Injector wear, oil dripping, improper adjustment, slightly stuck fuel injector, etc.

The ECU calculates the actual fuel injection amount based on the rail pressure and power-on time. However, this actual fuel injection amount is not emitted from the injector but is a theoretical fuel injection amount.