Operation Section
-99-
Problem Probable Cause Corrective Action
Fuel tank almost empty Fuel Pump Cavitations
z The tank should be at least ¼ full to
properly prime the fuel pump
z Fuel select switch is not on GAS
Clogged fuel filter Repair/replace as required
z See Maintenance section, Primary
and Secondary Fuel Filter
replacement
Electric Fuel Pump malfunction
(GAS)
Check electrical connection
z Check Relay and fuse Turn key ON
and verify pump is operating
z See G424E/G430E Dual Fuel
Engine Service Manual
Pressure regulator malfunction Test pressure regulator operation
z See G424E/G430E Dual Fuel
Engine Service Manual
Fuel Injector malfunction Test Injector operation
z See G424E/G430E Dual Fuel
Engine Service Manual
Air filter clogged Check air filter
z Clean/replace as required
Incorrect air/fuel or ignition control See Advanced Diagnostics
Difficult to Start
(Gas)
Engine Mechanical See Engine Service Manual
Isolate the gasoline system by
running the lift truck on LPG
Verify LPG cylinder is full and valve is open.
If the problem does not exist in LPG mode
proceed with the corrective action steps
below.
If the problem also exists in LPG mode then
the root cause is most likely to be
something other than the fuel system
z See Advanced Diagnostics
Fuel tank almost empty Fuel Pump Cavitations
z The tank should be at least ¼ full to
properly prime the fuel pump
Will Not Run
Continuously
(Gas)
Clogged fuel filter Repair/replace as required
z See Maintenance section, Primary
and Secondary Fuel Filter
replacement
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