SECTION 5
TROUBLESHOOTING
TABLE 5-1
TROUBLE ANALYSIS FOR DETROIT DIESEL ENGINE (CONT.).
CORRECTIVE ACTION
PROBABLE CAUSE
TROUBLE
Drain and refill tank with specified
E n g i n e Will Not
Wrong type of fuel - fuel with poor
fuel (Refer to Section 4). Bleed
burning qualities.
Start Or Starts
the fuel system to remove undesir-
Hard (Cont.)
able fuel.
Check battery starter, and battery
Engine not cranking fast enough.
cables. Recharge battery. Repair
or replace electric components as
necessary.
Drain fuel tank. Refill with clean
W ater in the fuel system.
fuel. Bleed the fuel system.
Reface valves. Replace pistons and
Low compression caused by valves
rings as necessary. Rebore or re-
not seating, worn rings, blown head
place liners. Replace head gasket.
gasket, injectors not properly seated.
Clean dirty injector seats and in-
stall injectors, using new gaskets.
Service air cleaner as necessary.
Plugged air cleaner.
Inspect blower drive shaft and drive
Blower not functioning.
coupling. Replace damaged parts.
Replace thermostat.
Low coolant temperature.
Uneven Running Or
Frequent Stalling
Perform a "Fuel Flow Test".
Not
Insufficient fuel.
less than 0.5 gallon per minute
(1.89 Litres per minute) should
return to fuel tank.
Check injector timing and position
Faulty injectors.
of injector rack. Replace faulty
injector.
Remove air box cover and inspect
Low compression pressures.
the compression rings through the
ports in the cylinder liners. Over-
haul the cylinder assembly if the
rings ore badly worn or broken.
Adjust governor linkages.
Governor instability `(hunting).
Tune-up engine.
Improper engine adjustments and
Lock of Power
gear train timing.
Perform "Fuel Flow Test". Not
Insufficient fuel.
less than 0.5 gallon per minute
(1.89 Litres per minute) should
return to fuel tank.
5-15.
