Section 5 • Troubleshooting
Part No. 218567 AL4 • AL4000 5 - 3
August 2016
TROUBLESHOOTING
Engine turns over but will not
start or is diffi cult to start
Empty fuel tank Add fuel to tank
Clogged fuel lines or tank Inspect and repair as needed
Leaking or pinched fuel lines Inspect and repair as needed
Clogged fuel fi lter Replace fi lter
Air or water mixed in fuel Air: Tighten fuel lines and vent
fuel system air at injection pump.
Water: Drain fuel and replace
fi lter; inspect and clean or replace
injector as needed.
Engine runs rough
Clogged or leaking fuel system Replace fuel lines, tighten all
connections, inspect the fuel
pickup tube and inspect the fuel
fi lter
Air or contaminated fuel in fuel
system
Inspect and repair as needed
Possible Cause SolutionProblem
Faulty glow plug Inspect and repair as needed
Battery is discharged or low Charge or replace battery
Air cleaner is dirty Clean or replace more frequently
Clogged exhaust system Inspect and repair as needed
Clogged air fi lter Inspect and repair or replace as
needed
Clogged or stuck fuel injectors Inspect and repair as needed
Faulty governor or fuel pump Inspect and repair as needed
Fuel injection nozzle clogged Inspect and repair as needed
Fuel injection pump faulty Inspect and repair as needed
Fuel solenoid valve faulty Inspect and repair as needed
Faulty relay or wiring connection
in control box
Inspect and repair as needed
Engine battery quickly discharged Battery electrolyte low Add distilled water and charge
Wiring loose or disconnected Inspect and repair as needed
Fan belt slips Inspect and repair as needed
Faulty alternator, rectifi er or diode Inspect and repair as needed
Faulty battery Replace
To Next Page
Loading...
