There are three reasons why 4TNV106 4TNV106T-SHL excavator engine emits black smoke:

1. Insufficient intake. Check if the intake valve clearance is within a reasonable range, and the valve clearance is not equal, which will cause insufficient intake pressure and quantity. Check if the air filter is clogged. Check the booster for damage.

2. Diesel quality is not good.

3.The injector is worn and the fuel is too much, resulting in insufficient combustion.

Frequently asked questions：

1.Is this excavator complete engine assy can be used for my excavator?
Please check the suitable list if this excavator engine assy can be used or not, if is not inside, please contact us.

2.How is the quality of this engine assy?
There is no doubt with the quantity, our quantity is unbeatable.

3.How to replace excavator complete engine assy(installation)?
Please check your excavator instruction manual and follow it replace/installation. If have problem can contact our technical support team.

The excavator complete engine assy plays an important role in the excavator. The excavator engine is the heart of the excavator. If the excavator engine assy is damaged, the excavator will not be able to start. Buy excavator engine form Tonkee with best price, you will never be disappointed. Tonkee offers high quality excavator complete engine with professional technical and after-sales support service with more than 10 years.