Table 4-1.--Diesel Engine Troubleshooting Chart--Continued
TROUBLE
PROBABLE CAUSE
REMEDY
With coolant loss.
Coolant entering cylinder.
Torque head bolts.
At high engine speed or Insufficient fuel.
Correct fuel flow.
with load.
Air in fuel.
Test fuel system for air leaks.
Injector filter clogged.
Test injector filters.
Injector rack levers out of adjust- Adjust injector rack control levers.
ment.
High exhaust back pressure.
Test exhaust back pressure.
Eliminate restriction in exhaust
system.
Restricted air intake.
Test air inlet restriction.
Check blower screen for obstruc-
tion.
Service or replace air filter as re-
quired.
Governor to injector rod movement Correct governor to injector rod
restricted.
operation.
Injector control tube and lever as- Replace faulty parts.
sembly faulty.
Detonation.
Lube oil leak into cylinder(s).
Test cylinder compression. Elimi-
nate oil leak.
Exhaust smoke black-gray.
Air inadequate for complete fuel Eliminate cause of excessive ex-
burn.
haust back pressure.
Eliminate restriction of fresh air
intake at:
Air filter.
Intake housing screen.
Cylinder liners.
Shutdown valve.
Correct air pressure loss at:
Air intake housing gasket.
Blower lobes.
4-44