Commander 2WD V6-3.7L (2009)
Fuel Rail: Service and Repair
Fuel Rail - Removal
3.7L
WARNING: The fuel system is under constant pressure even with engine off. Before servicing the fuel rail, fuel system pressure must be
released.
CAUTION: The left and right fuel rails are replaced as an assembly. Do not attempt to separate rail halves at connector tubes. Due to design of
tubes, it does not use any clamps. Never attempt to install a clamping device of any kind to tubes. When removing fuel rail
assembly for any reason, be careful not to bend or kink tubes.
1. Remove fuel tank filler tube cap.
2. Perform Fuel System Pressure Release Procedure. See: Fuel Filter/Fuel Pressure Release/Service and Repair
3. Remove negative battery cable at battery.
4. Remove air duct at throttle body air box.
5. Remove air box at throttle body.
6. Remove air resonator mounting bracket at front of throttle body (2 bolts).
7. Disconnect fuel line latch clip and fuel line at fuel rail. A tool will be necessary for fuel line disconnection. See: Fuel Line Coupler/Service and
Repair
8. Remove necessary vacuum lines at throttle body.
9. Disconnect electrical connectors at all 6 fuel injectors. Push red colored slider away from injector (1). While pushing slider, depress tab (2) and
remove connector (3) from injector. The factory fuel injection wiring harness is numerically tagged (INJ 1, INJ 2, etc.) for injector position
identification. If harness is not tagged, note wiring location before removal.
10. Disconnect electrical connectors at all throttle body sensors.
11. Remove 6 ignition coils See: Ignition System/Ignition Coil/Service and Repair/Ignition Coil - Removal.
