Operation Section
-100-
Problem
Probable Cause
Corrective Action
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
Incorrect idle speed or ignition
problem
See Advanced Diagnostics
Will Not Run
Continuously
(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
Clogged fuel filter
Repair/replace as required
z
See Maintenance section, Primary
and Secondary Fuel Filter
replacement
Pressure regulator malfunction
Test pressure regulator operation
z
See G424E/G430E Dual Fuel
Engine Service Manual
Will Not
Accelerate/Hesita
tion During
Acceleration or
Engine Stalls
(Gas)
Fuel Injector malfunction
Test Injector operation
z
See Chapter 9 Tests and
Adjustments
