Troubleshooting (Engine) - MULTIQUIP LT6D Operation Manual

Symptom
Engine revolution is not
smooth.
Either white or
blue exhaust gas is
observed.
Either black or dark
gray exhaust gas is
observed.
Deficient output.
page 60 — LT6D LIgHT TOWeR • OpeRaTIOn manuaL — Rev. #0 (07/16/13)
Table 12 engine Troubleshooting (continued)
possible Cause
Fuel filter clogged or dirty?
Air cleaner clogged?
Fuel leak due to loose injection pipe
retaining nut?
Injection pump malfunctioning?
Incorrect nozzle opening pressure?
Injection nozzle stuck or clogged?
Fuel over flow pipe clogged?
Governor malfunctioning?
Excessive engine oil?
Piston ring and liner worn or stuck?
Incorrect injection timing?
Deficient compression?
Overload?
Low grade fuel used?
Fuel filter clogged?
Air cleaner clogged?
Deficient nozzle injection?
Incorrect injection timing?
Engine's moving parts seem to be seizing?
Uneven fuel injection?
Deficient nozzle injection?
Compression leak?

troublesHooting (engine)

Clean or change.
Clean or change.
Tighten nut.
Repair or replace.
Adjust.
Repair or replace.
Clean.
Repair.
Reduce to the specified level.
Repair or replace.
Adjust.
Adjust top clearance.
Lessen the load.
Use the specified fuel.
Clean or change.
Clean or change.
Repair or replace the nozzle.
Adjust.
Repair or replace.
Repair or replace the injection pump.
Repair or replace the nozzle.
Replace head gasket, tighten cylinder head
bolt, glow plug and nozzle holder.
Solution