Why the bulldosers emits black smoke and holds the machine?

Why the bulldosers emits black smoke and holds the machine?We find the following solution:

1,the air filter blockage, remove the air filter and cleaning.

2, the combustion of diesel is not sufficient.

3, nozzle atomization is bad.

4, between the air isn't clean.

5, may the piston cylinder barrel wear is too big.

6, hydraulic pump oil improper adjustment.

7, pressure is not correct.

8, engine running out of steam.

9, hydraulic pump failure.

10, drivers hydraulic pump power mismatch leads to suppress the car engine.

Hydraulic pump, large flow regulating function problem (flow) engine load is too big, so hold back a car, a lot of times suppress car is for this reason, it is possible that the intake clogged, inadequate suction can also suppress the car (or even vent plug can also suppress the car).

Check the turbocharger and cartridge

Excavator smoke boring.

1, high pressure pump has a problem.

2, oil, and there is something wrong with the supercharger.

3, the turbocharger is broken.

4, insufficient intake fuel injection advance Angle early or overload