Dodge Nitro. Manual - part 661

Fig. 24: Removing/Installing Fuel Injectors Electrical Connectors 
Courtesy of CHRYSLER LLC 

8. 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. 

 

2007 Dodge Nitro R/T 

2007 ENGINE Fuel System - Nitro

  

9. Disconnect electrical connectors at throttle body sensors.  

10. Remove 6 ignition coils. Refer to REMOVAL . 

Fig. 25: Removing/Installing Fuel Rail - 3.7L 
Courtesy of CHRYSLER LLC 

1 - MOUNTING BOLTS (4)
2 - QUICK-CONNECT FITTING
3 - FUEL RAIL
4 - INJ. #1
5 - INJ. #3
6 - INJ. #5
7 - INJ. #2
8 - INJ. #4

 

2007 Dodge Nitro R/T 

2007 ENGINE Fuel System - Nitro

  

11. Remove four fuel rail mounting bolts (1).  

12. Gently rock and pull left side of fuel rail until fuel injectors just start to clear machined holes in cylinder 

head. Gently rock and pull right side of rail until injectors just start to clear cylinder head holes. Repeat 
this procedure (left/right) until all injectors have cleared cylinder head holes.  

13. Remove fuel rail (with injectors attached) from engine.  

14. If fuel injectors are to be removed, see REMOVAL.  

REMOVAL 

Fig. 26: Identifying Fuel Line, Mounting Bolts, Electrical Connectors & Fuel Rail 
Courtesy of CHRYSLER LLC 

1. Remove fuel tank filler tube cap.  

2. Perform Fuel System Pressure Release Procedure.  

3. Remove negative battery cable at battery.  

4. Disconnect air duct at throttle body.  

9 - INJ. #6
10 - CONNECTOR TUBE

WARNING:

The fuel system is under constant pressure even with engine off. Before 
servicing fuel rail, fuel system pressure must be released.

 

2007 Dodge Nitro R/T 

2007 ENGINE Fuel System - Nitro

  

5. Remove air intake ducts between throttle body and air filter assembly.  

6. Remove upper half of intake manifold.  

7. Disconnect electrical connectors (3) at all six fuel injectors. For procedures, proceed to step 10.  

8. Disconnect fuel line latch clip and fuel line (1) at fuel rail. A special tool will be necessary for fuel line 

disconnection. Refer to FITTING-QUICK CONNECT for removal procedures.  

9. Remove necessary vacuum/vapor lines at throttle body. 

 

2007 Dodge Nitro R/T 

2007 ENGINE Fuel System - Nitro