IC Bus CE Series, Operation And Maintenance Manual

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Operation
The operator will be alerted to emissions or other system
problems when the Malfunction Indicator Lamp (MIL) illuminates.
When the MIL illuminates, bring the vehicle in for service at
the next available opportunity. The HD-OBD system does not
change the way the vehicle should be driven, the recommended
driving style, or the way you use the vehicle.
Self Diagnostics
All Warning Lamps are located on the instrument panel gauge
cluster. When the ignition switch is turned ON, the Warning
Lamps are illuminated and remain on while the ECM runs normal
start-up tests, then goes OFF. If a warning lamp stays on or
comes on while operating the vehicle, it is an indication that the
vehicle needs service. When the warning lamp is illuminated,
a Diagnostic Trouble Code (DTC) will be generated. Take the
vehicle to a service center as soon as possible as some optional
features and / or engine power may be lost while the indicator is
lit.
Fuel
NOTE: For specific fuel system information, refer to the
vehicle Engine Operation and Maintenance Manual.
This vehicle is equipped with a PSI 8.8L LPG engine which is
fitted with a BiPhase Liquid Propane Electronic Fuel Injection
(LPEFI
® ) fuel system. This system utilizes liquid propane
fuel injection to improve power, efficiency, and operating
characteristics.
The LPEFI ® system works the same as a gasoline fuel injected
system, with the only difference being that it injects liquid
propane into each intake port.
The propane fuel system
operates similar to a gasoline fuel system. A typical gasoline
fuel system requires a rich mixture that is very dense and
dependent on ambient temperature. With the liquid propane
injection the engine is capable of normal start-up with a fuel
mixture that is much leaner, thus allowing a reduction in start-up
emissions.
The LPEFI ® system utilizes three main components: a fuel tank,
the fuel lines, and the fuel injectors. The tank is located near the
back of the vehicle, and the lines run from the tank to the fuel
rails that are mounted on each side of the PSI 8.8L LPG engine.
Fuel and Blends
HD5 Consumer Grade Propane is required for the PSI 8.8L
LPG engine. The propane should meet all requirements of the
ASTM D1835 standard (current year version), and should also
be odorized.
Acceptable Fuel And Blends
• HD - 5 Commercial Propane
• More than 90% Propane
• Less than 5% Propylene
• Odorized Propane
Unacceptable Fuel And Blends
• HD -10 Commercial Propane
• Standard Commercial Propane
• Contaminated Propane
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