Sea-doo RX Shop Manual page 139

1. Push clip toward injector to release connector
Gently pull rail up by hand, working each side
slightly at a time.
Pull rail out.
Disconnect hose ends at their inline connectors
and drain fuel rail.
Disconnect air and fuel hoses from rail.
1. Air and fuel return hoses
2. Fuel supply hose
SMR2000-051-05-03A.FM
Subsection 03 (COMPONENT INSPECTION AND ADJUSTMENT)
www.SeaDooManuals.net
Section 05 ENGINE MANAGEMENT (DI)
NOTE: When lifting/removing air/fuel rail, we rec-
ommend replacing carbon dams on direct injec-
tors that have been running for 50 hours or more.
Installation
For installation, reverse the removal process but
pay attention to the following.
A thin film of injection oil may be applyed to O-rings
of fuel injectors to ease rail installation.
Apply Loctite 243 on rail retaining screws then
torque to 25 N•m (18 lbf•ft).
When installing fuel or air hoses fitting to the
air/fuel rail, use Loctite Krylox (no. 29-719).
Direct Injector
The direct injectors can be replaced individually by
lifting the air/fuel rail.
Leakage Test
If direct injector leaks through its large top O-ring,
there will be an air/fuel leak between the injector
and the air/fuel rail. Replace O-ring of both injec-
tors.
If there is an injector internal leak, the high tem-
perature from the combustion chamber will make
visible overheated area. Replace damaged com-
ponents.
Electrical Test
Using the vehicle communication kit (VCK) with
the B.U.D.S. software, energize the direct injector
in the Activation section.
If the injector does not work, disconnect the plug
connector from the injector.
Install a temporary connector to the injector with
wires long enough to make the connection out-
side the bilge and apply voltage (12 V) to this test
harness.
This will validate its mechanical and electrical op-
eration.
If it does not work, replace the direct injector.
Otherwise, check the resistance of the direct in-
jector circuit.
Reconnect the injector and disconnect the AMP
plug connector number 4 on the MPEM.
05-03-13