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FUEL SYSTEM DESCRIPTION
The Engine Control Module (ECM) receives information from various engine sensors in
order to control the operation of the Pressure Regulator and Shut-Off Valve. The Shut-
Off Valve solenoid prevents fuel flow unless the engine is cranking or running.
LPG is stored in the tank as a liquid and delivered under pressure of up to 21.5 BAR
(312 psi). At Key ON the Regulator allows LPG to flow from the tank through the fuel
filter and inside, where fuel is vaporized and reduced in pressure.
DIAGNOSTIC AIDS
This procedure is intended to diagnose a vehicle operating on LPG. If the vehicle will not
continue to run on LPG, refer to Hard Start for preliminary checks. Before starting this
procedure, complete the following tasks to verify that liquid fuel is being delivered to the
Regulator:
Inspect fuel tank to verify it has a sufficient amount of fuel.
Verify manual Shut Off valve on the LPG tank is fully opened.
Verify that the excess flow valve has not been activated.
Inspect fuel tank to ensure it is properly mounted and rotated to the correct position.
Inspect the hoses leading from the tank ensuring they are properly connected and do
not have any kinks or damage.
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