204 Maintenance
COMPRESSED NATURAL GAS FUEL SYSTEM
If your vehicle is a Compressed Natural Gas (CNG) model, it runs
on a highly pressurized version of the same natural gas used in
many homes. Your CNG MV-1 operates and performs much like
the gasoline-powered MV-1, but there are a few differences that
are listed in this section and other places in this manual.
The CNG system in your vehicle, including the tanks and
hoses, has been designed to hold the gas at this high pressure,
and has been tested for safety. You should never smell gas or
hear a hissing sound unless you are refueling. If you do, shut
down the CNG system by following the procedure in If the
Fuel System is Leaking on page 128.
NEVER attempt to modify the fuel system and always have
the fuel system maintenance performed by an authorized
service center.
REASON: Tampering with, or improperly maintaining the
high-pressure fuel system can cause a dangerous condition
in which you can be killed or seriously injured.
CNG Fuel Cutoff System
The cutoff valve for the fuel tanks is controlled by the ignition
switch. When the ignition switch is in the OFF position, the
valves are closed, shutting off the fuel flow out of the tanks. It
opens when the ignition switch is turned to the ON position.
This is similar to how an electric fuel pump works in a gaso-
line-powered vehicle.
CNG Identification
Your MV-1 has an identifying CNG label attached to the liftegate
next to the license plate. Do not remove this label. This label is
necessary for insuring your vehicle. Driving without this label
may violate laws or regulations in some locations.
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