Sea-doo 2003 GTI LE RFI, Shop Manual

Page: 313 / 779

Section 06 ENGINE MANAGEMENT (RFI)
Subsection 04 (COMPONENT INSPECTION)
SMR2003-022_06_04A.FM
06-04-1
COMPONENT INSPECTION 0
GENERAL
– Always disconnect battery properly prior to
working on the fuel system.
When the job is done, ensure that hoses from fuel
rail going to fuel pump are properly secured in their
support. Then, pressurize the fuel system. Per-
form the high pressure test as explained in this
section and pressurize the fuel tank and fuel lines
as explained in FUEL SYSTEM section.
Properly reconnect the battery.
CAUTION: Never use injector cleaning products.
They may contain additive that could damage in-
jector components. A copper wire brush may be
used to clean the tip of the direct injectors if nec-
essary.
Engine problems are not necessarily related to the
electronic fuel injection system.
It is important to check that the electrical system
is functioning properly:
– battery
– fuses
– DESS
– ignition (spark)
– ground connections
– wiring connectors.
If all of the above mentioned items are functioning
correctly, the following verifications can be per-
formed to detect any faulty components.
NOTE: Troubleshooting should be performed us-
ing the VCK or MPEM programmer tool. See
TROUBLESHOOTING in this subsection.
It is possible that a component seems to operate
in static condition but in fact, it is defective. In this
case, the best way to solve this problem is to re-
move the original part and replace it with one
which is in good condition.
Never use a battery charger to replace temporarily
the battery, as it may cause the MPEM to work
erratically or not to work at all. Check related-circuit
fuse solidity and condition with an ohmmeter. Vi-
sual inspection could lead to false results.
To perform verifications, a good quality multimeter
such as Fluke 111 (P/N 529 035 868) should be
used.

WARNING
The fuel system of a fuel injection system holds
much more pressure than on a carbureted wa-
tercraft. Prior to disconnecting a hose or to re-
moving a component from the fuel system, fol-
low the recommendation described here.

WARNING
Fuel lines remain under pressure at all times.
Always proceed with care and use appropriate
safety equipment when working on pressur-
ized fuel system. Wear safety glasses and work
in a well ventilated area. Do not allow fuel to
spill on hot engine parts and/or on electrical
connectors. Proceed with care when removing/
installing high pressure test equipment or dis-
connecting fuel line connections. Cover the fuel
line connection with an absorbent shop rag.
Slowly disconnect the fuel hose to minimize
spilling. Wipe off any fuel spillage in the bilge.
Fuel is flammable and explosive under certain
conditions. Always work in a well ventilated ar-
ea. Always disconnect battery prior to work on
the fuel system. After performing a pressure
test, use the valve on the fuel pressure gauge to
release the pressure (
if so equipped ).

WARNING
Ensure to verify fuel line connections for dam-
age and that NO fuel line is disconnected prior
to installing the safety lanyard on the DESS
post. A pressure test must be done before con-
necting the safety lanyard. The fuel pump is
started each time the safety lanyard is installed
and it builds pressure very quickly.

WARNING
All electrical actuators (injectors, fuel pump,
RAVE solenoid, ignition coil and starter sole-
noid) are permanently connected to the bat-
tery positive terminal, even when the safety
lanyard is removed. Always disconnect the
battery prior to disconnecting any electric or
electronic parts.
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