03 cummins loping undrivable

[Derwin Yamamoto]

truck started running rough and code p0251 came up and changed FCA but problem continued.symptoms are loping in idle and when given gas starts to sound like a miss on a gas vehicle and when put in gear problem gets worse and doesn't clear up with higher rpms like what I've read on some forums.thanks

 

[cerberusiam]

If you are hearing a miss it is either a fuel delivery problem, think LP, or you have an injector gone bad.