General Troubleshooting 4-3TP-5606 6/02
Will not No fuel in tank Replenish
start
(cranks Defective fuel Check continuity Section 7. Fuel Solenoid
okay) solenoid
Defective fuel Replace fuel pump Engine Service Manual
pump NOTE:
Fuel pump is polarity
sensitive and will fail
if the lead connections
are made in reverse.
Air cleaner clogged Clean or replace element Section 3. Air Cleaner
Service
Air in fuel system Bleed air Section 3. Fuel System
Water, dirt in fuel Drain, flush fuel
system system
Improper type of fuel Use proper type of fuel; Section 3. Fuel System
consult fuel supplier
Dirty or faulty injectors Check injectors Engine Service Manual
Improper valve Correct or replace Engine Service Manual
timing timing gear
Incorrect injection Adjust injection timing Engine Service Manual
timing
Defective injection Repair/replace Engine Service Manual
timing injection pump
Fuel cam shaft worn Replace fuel cam shaft Engine Service Manual
Fuel leak Tighten fittings Engine Service Manual
Improper compression Check compression Engine Service Manual
Improper type of Use proper lube oil Section 3. Lubrication
crankcase lube oil System
Improper valve clearance Check valve clearance Section 3. Valve adjustment/
Engine Service Manual
Clogged fuel filter Replace filter Section 3. Fuel Filter
Service/Engine Service Manual
Open wiring, terminal, Check continuity Section 9. Wiring Diagrams
or pin (P2 connector)
K4 relay Check relay coil Section 7. Controller
defective (K2 relay continuity Circuit Board
must be energized) Section 9. Wiring Diagrams
Problem Possible Cause Corrective Action Reference
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