
-93-
-93-
Operation Section
Operation Section
Problem
Problem
Probable
Probable Cause
Cause
Corrective
Corrective Action
Action
Fuel
Fuel tank
tank almost
almost empty
empty
Fuel
Fuel Pump
Pump Cavitations
Cavitations
The tank should be at least ¼ full to
The tank should be at least ¼ full to
properly prime the fuel pump
properly prime the fuel pump
Fuel select switch is not on
Fuel select switch is not on GAS
GAS
Clogged
Clogged fuel
fuel filter
filter
Repair/replace
Repair/replace as
as required
required
See Maintenance section, Primary and
See Maintenance section, Primary and
Secondary Fuel Filter re
Secondary Fuel Filter replacement
placement
Electric Fuel Pump malfunction
Electric Fuel Pump malfunction
(GAS)
(GAS)
Check electrical connection
Check electrical connection
Check Relay and fuse Turn key ON
Check Relay and fuse Turn key ON
and verify pump is operating
and verify pump is operating
See Engine Service Manual
See Engine Service Manual
Pressure
Pressure regulator
regulator malfunction
malfunction
Test
Test pressure
pressure regulator
regulator operation
operation
See Engine Service Manual
See Engine Service Manual
Fuel
Fuel Injector
Injector malfunction
malfunction
Test
Test Injector
Injector operation
operation
See Engine Service Manual
See Engine Service Manual
Air
Air filter
filter clogged
clogged
Check
Check air
air filter
filter
Clean/replace as required
Clean/replace as required
Incorrect
Incorrect air/fuel
air/fuel or
or ignition
ignition control
control
See
See Advanced
Advanced Diagnostics
Diagnostics
Difficult to Start
Difficult to Start
(Gas)
(Gas)
Engine
Engine Mechanical
Mechanical
See
See Engine
Engine Service
Service Manual
Manual
Isolate the gasoline system by
Isolate the gasoline system by
running the lift truck on LPG
running the lift truck on LPG
Verify LPG cylinder is full and valve is open.
Verify LPG cylinder is full and valve is open.
If the problem does not exist in LPG mode
If the problem does not exist in LPG mode
proceed with the corrective action steps
proceed with the corrective action steps
below.
below.
If the problem
If the problem also exists in LPG mode then
also exists in LPG mode then
the root cause is most likely to be
the root cause is most likely to be
something other than the fuel system
something other than the fuel system
See Advanced Diagnostics
See Advanced Diagnostics
Fuel
Fuel tank
tank almost
almost empty
empty
Fuel
Fuel Pump
Pump Cavitations
Cavitations
The tank should be at least ¼ full to
The tank should be at least ¼ full to
properly prime the fuel pump
properly prime the fuel pump
Will Not Run
Will Not Run
Continuously
Continuously
(Gas)
(Gas)
Clogged
Clogged fuel
fuel filter
filter
Repair/replace
Repair/replace as
as required
required
See Maintenance section, Primary and
See Maintenance section, Primary and
Secondary Fuel Filter re
Secondary Fuel Filter replacement
placement
Summary of Contents for G20E-5
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