2. DIESEL ENGINE
(1) Starting deficiency
(A) Due to deficient compression:
(B) Due to improper fuel injection in combustion chamber:
(C) Does not start even combustion and compression are normal:
(D) Poor Battery
(2) Insufficient output and deficient operation:
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No compression available.
Nearly no or very little Compres-
sion available:
Very little or no fuel flow:
Fuel injection not available in
combustion chamber:
Fuel not available in the tank.
Water or dust entered.
Does not reach starting rpm:
Compression insufficient.
Engine overheated and dark
exhaust
RPM fluctuates:
Engine speed does not rise:
Intake or exhaust valve defective
Decompression adjustment deficient.
Valve seat contact deficient.
Piston ring worn.
Cylinder worm.
Mating surface between cylinder and cylinder head deficient.
Nozzle seat loose.
Air breather hole in tank cap clogged.
Fuel strainer passage clogged or strainer clogged.
Fuel strainer cock closed.
Aeration in piping (Particularly occurs when fuel tank is emptied.)
Injection pump barrel and plunger stuck.
Nozzle hole clogged.
Nozzle needle stuck.
Improper starting procedure.
Engine oil viscosity too high or highly contaminated.
Aeration in piping.
See (“Due to deficient compression” above.)
Dirty cooling fins.
Water entered fuel filter.
Carbon deposited in fuel chamber or exhaust hole.
Smoke set improper.
Overloading.
Injection timing inappropriate.
Nozzle clogged.
Deficient contact between governor and sleeve.
Deficient governor spring.
Fly plate and sliding parts worn or deficient in actuation.
Valve open/close timing inappropriate.
Exhaust hole or muffler clogged.
Overloading.
