Unstable Running Of Diesel Engine; Low Power Of Diesel Engine - Baudoulin 4M11G Maintenance Manual

Maintenance Manual of 4M11 Series Diesel Engine For Land Power Generators
3 Starting system fault
3-1 Insufficient voltage of battery
3-2 Poor contact of electric circuit connectors
3-3 No rotation or weak rotation of starter motor
Incomplete meshing between starter motor
3-4
gear and flywheel ring gear

3.2.2 Unstable Running of Diesel Engine

SN. Cause
1 Air content in fuel system
2 Blockage of fuel system
Non-uniform fuel supply among
3
cylinders of fuel injection pump.
Poor working performance of
4
individual fuel injector
5 Unstable working of speed regulator
Low fuel quality or water content in
6
fuel

3.2.3 Low Power of Diesel Engine

SN.
1 Fuel system fault
1-1 Blockage or air content in fuel system.
Poor atomization of fuel injection, injection
1-2
pressure is not enough.
Insufficient or non-uniform fuel supply due to
1-3
malfunction of fuel injection pump
Fuel supply advance angle don't meet the
1-4
requirements
Check pipeline connectors for looseness and bleed air form fuel
line.
Clean or replace diesel filter
Check and repair fuel injection pump and adjust on fuel pump test
stand to ensure consistent fuel supply volume for all cylinders.
Check fuel injector with poor working performance and clean or
replace.
Check speed regulator and solve malfunction.
Check fuel , and replace if necessary
Cause
the leaks (if any).
Charging and overhaul to battery
Check the circuit
Overhaul starter motor
Rotate the flywheel ring gear for an angle. If the engine still
fails to start, check the starter motor.
Troubleshooting
Clean or replace diesel filter and bleed air
Check and calibrate the fuel injectors and when
necessary replace.
Check or replace
Check and adjust fuel supply advance angle
24
Troubleshooting