| You have done a LOT of work.. I can see your frustration.. Because you have ONE o2 Sensor reading three Cylinders, it's posable for ONE to be rich, and the other two will be forced LEAN to compensate.. as the O2 sensor will just give an Average of the three Cylinders.. and the ECU want's to see the Average as good.. it really does not care about the Individual Cylinders.. ( that is not it's job in this set up ) and you have mentioned you are seeing a Lean missfire and posable rich condition.. this would fit that senario I would like the see a complete set of Injectors that have been flow tested AND PASSED, installed to test.. just changing Injectors is not going to assure they are all the same.. ( just being Pickey here ).. That is where I'd start.. I can't ( yet ) see the need for a Wideband.. really do not think it will tell us anything.. I do think that before you change injectors to a Known Good Set, the next step might be to read the Injector Pulse Width left bank to right bank.. that will tell if you have a Leak on one side that is not present on the Other Side.. but if you can't read the Injector Pulse Width, then I'd recommend the Known Good Injector Swap.. with a Flow tested Set.. That will eliminate a 'Non Balanced Fuel System' as a cause.. then proceed from what you find from there.. Cj
|
