TM 5-3805-280-24-2
Fuel System Operation and Tests
115
Symptom
Problem
Solution
30
Over-fueling.
Repair injection pump. (See Group
35.)
Engine Emits Excessive Blue or
Cranking speed too slow.
Check batteries and electrical
White Smoke
system.
Injection pump timing incorrect.
Adjust timing (this group).
Injection nozzles faulty or sticking.
Repair. (See Group 35.)
Excessive wear in liners and/or
See Group 10.
piston rings stuck.
Incorrect cetane fuel for ambient
Use correct grade of fuel. (See
temperature.
Group 02.)
Engine running too "cold".
Check thermostat. (See Group 25.)
Engine Idles Poorly
Injection nozzles faulty or sticking.
Repair. (See Group 35.)
Incorrect timing.
Adjust timing (this group).
Pump slow idle speed not correctly
Adjust slow idle speed (this group).
adjusted.
Fuel lines restricted.
Clean as required.
Water in fuel.
Drain water from filter, (or separator,
if equipped). Install new filter. (See
Group 35.)
Injection pump return lines or fittings
Clean as required.
restricted.
Injection nozzle return lines clogged.
Clean as required.
Low cetane fuel.
Use correct grade of fuel. (See
Group 02.)
Engine Does Not Develop Full
Low cetane fuel.
Use correct grade of fuel. (See
Power
Group 02.)
Incorrect timing.
Adjust timing (this group).
Continued on next page
RG,115,JW7710
1924NOV973/4
13-557
