JeremyS
Active Member
- Joined
- Apr 1, 2014
- Messages
- 32
- Reaction score
- 5
- Location
- Indiana
- Vehicle Year
- 2002
- Make / Model
- Ford
- Engine Size
- 3.0
- Transmission
- Automatic
2002 3.0L Ranger Edge, 145k miles.
The problem is once the truck is warmed up there is a misfire at idle and eventually it will throw a code and the CEL will flash. The code is P0305, Cylinder 5 Misfire Detected. I checked the plug and swapped with an adjacent cylinder, as well as the plug wire and the problem stayed with cyl 5. Also swapped the wire for cyl 1 with cyl 5 on the coil pack and the misfire stayed at cyl 5, ruling out a spark issue.
My next suspicion would be an injector, but the fuel rail and injector for that side of the motor are buried under the air plenum. Is there any good way to check the fuel injector for #5 without taking the air plenum off? I also noticed a leaking valve cover on that side of the engine so if I end up tearing it apart I'm going to change that while I am in there.
Any other things to check for this misfire on cyl 5?
The problem is once the truck is warmed up there is a misfire at idle and eventually it will throw a code and the CEL will flash. The code is P0305, Cylinder 5 Misfire Detected. I checked the plug and swapped with an adjacent cylinder, as well as the plug wire and the problem stayed with cyl 5. Also swapped the wire for cyl 1 with cyl 5 on the coil pack and the misfire stayed at cyl 5, ruling out a spark issue.
My next suspicion would be an injector, but the fuel rail and injector for that side of the motor are buried under the air plenum. Is there any good way to check the fuel injector for #5 without taking the air plenum off? I also noticed a leaking valve cover on that side of the engine so if I end up tearing it apart I'm going to change that while I am in there.
Any other things to check for this misfire on cyl 5?