BOMBARDIER SEA-DOO GTX RFI 5666 1998, Manual

Page: 26 / 47

Section 04 FUEL SYSTEM
Subsection 02 (FUEL INJECTION)
04-02-9
Fuel Injector
1. Inlet side
2. Filter
3. Wiring terminal
4. Coil
5. Plunger
6. Needle valve
7. Injection side
Using a sound scope, it is possible to check the
operating noise from each injector.
With the engine running or cranking, check that
there is normal operating noise in proportion to
engine revolutions.
If there is no noise from the injector, check the
wiring connector, injector or the signal from the
MPEM.
To check the signal, verify voltage at the injector
connector. There should be at least 6 Vdc.
Check the resistance of the fuel injector.
Disconnect the connector of the fuel injector.
Using a multimeter, check resistance between
both terminals.
The resistance should be between 2.3
Ω
and
2.5
Ω
at temperature of 20°C (68°F).
If not within specification, replace the fuel injec-
tor.
Leakage Test
To perform a leakage test, the injectors and fuel
rail have to be removed. See REMOVAL in this
sub-section for the procedure.
Reinstall both injectors to the fuel rail.
Reconnect the wire connector of the injector.
Place each injector in a clean bowl.
Install the safety lanyard cap on the switch to ac-
tivate the fuel pump.
Check for fuel leakage from the injector nozzle.
There should be less than 1 fuel drop of fuel per
minute.
If not within specification, replace the fuel injec-
tor(s).
ELECTRONIC MANAGEMENT
Throttle Position Sensor (TPS)
Check the resistance of the throttle position sen-
sor.
1. Throttle position sensor (TPS)
Remove the air intake silencer.
Disconnect the connector of the throttle position
sensor.
Using a multimeter, check the resistance be-
tween the terminals 1 and 2 of the throttle posi-
tion sensor.
The resistance should be between 1.6 k
Ω
and 2.4
k
Ω
.
Check also the resistance between the terminals
2 and 3 with the throttle plate in idle position.
The resistance should be between 710
Ω
and
1380
Ω
.
If not within specification, replace the throttle po-
sition sensor.
1
F07F0CA
2
3
4
5
6
7
F07F0EA
1