The diesel engine works, but one of the cylinders has misfire, therefore, required output power can not be developed. What may cause this?
20 Jul '19, 17:02
Probably, inlet and/pr exhaust valves leak or hanged. This leads to lower temperature at the end of compression in the subject cylinder subsequently, the fuel oil can not ignite. Check clearances between rollers of push rods and cam plates of valves. Check the ease of a stroke of valves in guide bushes. Overhaul/grind valves if necessary.
The other frequent trouble is the fuel pump which does not supply the fuel oil because of jammed plunger or valves. Check performance of a plunger and valves by hand feeling fuel pulsations in the fuel delivery pipe. If a plunger or a delivery valve confirmed jammed, a diesel engine to be shut down, replace/overhaul the faulty pump.
20 Jul '19, 17:03