BRP Outlander 400 EFI 2008, Руководство по обслуживанию

Страница: 201 / 434

Section 05 FUEL SYSTEM
Subsection 01 (ELECTRONIC FUEL INJECTION)
Intake Manifold
The intake manifold is connected to the engine
cylinder head. It provides support for the throttle
body, fuel injector and the fuel rail.
The air intake manifold is a resonator between
the throttle body and the air intake at the cylinder
head.
Fuel Rail
One fuel rail is mounted on the intake manifold.
The fuel rail ensures all the time, that enough fuel
can be delivered to the fuel injector. The fuel rail is
fed by the fuel pump with the properly regulated
fuel pressure.
Fuel Injector
One fuel injector is used to inject fuel into the in-
take port of the cylinder head.
GENERAL RECOMMENDATIONS
Engine problems are not necessarily related to the
electronic fuel injection system.
It is important to ensure the engine is in proper
operating condition and the electrical system is
not at fault.
When replacing a component, always check its
operation after installation.
Fuel System

WARNING
Fuel is flammable and explosive under cer-
tain conditions. Ensure work area is well ven-
tilated. Do not smoke or allow open flames or
sparks in the vicinity.

WARNING
Always disconnect battery prior to working
on the fuel system. Always disconnect bat-
tery exactly in the specified order, BLACK (-)
cable first.

WARNING
Fuel lines remain under pressure at all times.
Always proceed with caution and use appro-
priate safety equipment when working on
pressurized fuel system. Wear safety glass-
es.
Proceed with care when removing or installing
pressure test equipment or disconnecting fuel line
connections.
Slowly disconnect the fuel hose to minimize
spilling. Cover the fuel line connection with an
absorbent shop rag. Wipe off any fuel spillage.

WARNING
Do not allow fuel to spill on hot engine parts
or electrical connectors. The evaporating fuel
on the hot components or on the electrical
connectors produce highly inflammable fuel
vapors that can easily be ignited by the heat, a
spark, electrostatic discharge or stray current
resulting in a fire or an explosion.
Never use a hose pincher on injection system high
pressure hoses.
Replace any damaged or deteriorated fuel lines.
The fuel pump is activated each time electrical
power is turned on. A pressure test must be car-
ried out before turning the ignition key to ON and
setting the engine run/stop switch to RUN

WARNING
Always carry out a fuel pressure test when-
ever a fuel system component has been dis-
connected during a maintenance procedure.
A missed fuel leak could result in severe in-
jury or death.
After performing a fuel pressure test, use the
valve on the fuel pressure gauge to release the
pressure (if so equipped).
Electrical System
It is important to check that the electrical system
is functioning properly:
– Battery
– Fuses
– Relay(s)
– Ground connections
– Wiring connectors.
Never use a battery charger to substitute tem-
porarily the battery as it may cause the ECM
(engine control module) to work erratically or not
to work at all. Check related-circuit fuse solidity
and condition with an ohmmeter. Visual inspec-
tion could lead to false results.
Ensure that all electronic components are gen-
uine. Any modification on the wiring harness may
lead to generate fault codes or bad operation.
NOTE: For diagnostics purposes, use B.U.D.S.
software. See
MONITORING SYSTEM/FAULT
CODES
subsection.
200
vmr2008-136