Operation Section
-98-
Basic Troubleshooting (Gasoline)
Problem
Probable Cause
Corrective Action
Fuel tank empty
Fill fuel container
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
Faulty vapor connection between
the pressure regulator/ converter
and the mixer (LPG)
Check connection
z
Verify no holes in hose
z
Clamps must be tight
z
Look for kinked, pinched and/or
collapsed hose
Electric Fuel Pump malfunction
(GAS)
Check electrical connection
z
Check Relay and fuse
Turn key ON and verify pump is operating
Fuel 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 air/fuel or ignition/ spark
control
See Advanced Diagnostics
Engine Cranking
but Will Not Start
(Gas)
No VR Sensor Signal
Verify the VR signal is present
z
See Advanced Diagnostics
