new injectors? any ideas

[strokin03]

so i installed an edge evolution in my 2003 superduty powerstroke 6.0 about a month ago. i drove it around for a couple days then returned it to stock so my wife could take it to work. after i removed the programer i drove it to the store and it was running rough. never through a DTC so i didnt kno where to start. so i decided to reflash the ECM. i took it with me to dyno day saturday and bill reflashed it on the spot. i put it back in the truck when i got home and tired it, seemed to do a little better but after it ran for about 30 mins it started surging and then cut off and wouldn't restart. so i plugged the evolution back in to read the DTC and i Got PO271 injector 4 and po277 injector 6, it didnt give me any DTC when i had the old version but showed them when i got computer reflashed.


has anyone had these trouble codes and it been something else. i have already checked the FICM and it had 48 Volts.


-Rusty-

[Jeremy]

Do you still have a 03 ficm? i know you said it has 48 volts but the 03 Ficm's can crap the bed on one or two injectors. Have you checked your harness's under the ficm for rubbing? They can give you injector issues aswell.

[strokin03]

Originally Posted by Jeremy

Do you still have a 03 ficm? i know you said it has 48 volts but the 03 Ficm's can crap the bed on one or two injectors. Have you checked your harness's under the ficm for rubbing? They can give you injector issues aswell.

i checked the harness's and they all look pretty good, all connections were good and tight. but now that the truck will not run im not sure what to do now. i really dont wanna just start adding parts until i find exactly what is wrong. I know the DTCS show two injectors and i have heard storys about 6.0 injectors. so should i just buy the injectors and see how it goes?

Rusty-

[strokin03]

well i finally got my new injectors and got them put in. i put everythign back together and tried to start it. it turned over for about 30 secs then it tried to fire as long as i was turning the key over but as soon as i let off on the key it went back dead. while turning it over it was blowing smoke out the exaust, it was black smoke, not the normal grey smoke you see when you have bad injectors. so, where should i go next. i dont have any other dtcs so i dont know what to do now. i know of a couple ppl that have had trouble with the ICP sensor on the 03's but i dont want to just keep throwing parts on till i find the problem. if anyone has any ideas please let me know.

Thanks Rusty

[Jeremy]

black while cranking is usually a stuck egr valve, is your egr system still intact?