BOMBARDIER SEA-DOO GTX RFI 5666 1998, Manual

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Section 04 FUEL SYSTEM
Subsection 02 (FUEL INJECTION)
04-02-8
COMPONENT INSPECTION
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 MPEM programmer tool. See TROUBLE-
SHOOTING in this subsection.
AIR INDUCTION SYSTEM
Throttle Body
Check that the throttle plate moves freely and
smoothly.
FUEL DELIVERY
Fuel Filter
To inspect the fuel filter, the fuel pump assembly
has to be removed from the fuel tank. See RE-
MOVAL in this subsection for the procedure.
Fuel Pump
The fuel pump operation can be checked as fol-
lows.
Install the safety lanyard cap on the switch. The
fuel pump should run for approximately 1 second.
If not, check the 7.5 A fuse on the MPEM module.
Regulator
The regulator is mounted on top of the fuel pump
assembly.
1. Regulator
To inspect the regulator, a fuel pressure test must
be done.
Check that battery voltage is above 12 volts.
Place a suitable container below the quick con-
nect fitting of the fuel rail.
Cover the quick connect fitting with a shop towel.
Press on both tabs and disconnect the quick con-
nect fitting.
Install a fuel pressure gauge to the quick connect
fitting of the fuel hose.
Install the safety lanyard cap on the switch to ac-
tivate the fuel pump. The fuel pressure should be
between 386-414 kPa (56-60 PSI).
If the pressure is too high, replace the regulator.
If the pressure is too low, check the following
components:
– fuel hoses and connections
– fuel filter
– fuel pump
– regulator
;
WARNING
Fuel is under pressure. Wipe off any fuel
spillage in the bilge.
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