My 04.5 started idling rough today and it seems to miss just a bit right off idle. It has plenty of power and only produces black smoke when I get on it with zero hint of whote smoke anywhere. Just having the problems at idle. I replaced the lift pump about 50K miles ago with an airdog and replaced the filters just a little while ago. I also checked the oil just tonight and has not risen and does not smell like diesel. Truck has 162K miles and has original injectors and no power adders.

Should I just run some cleaner through it? I dont really want to have to replace injectors but am willing if I have to. Any suggestions are appreciated.

 

it sounds like you have an injector going bad. mine has done the same a few times. good luck

 

I had same problem with same truck-was a nightmare at170k--Dealer wanted 8k+ to fix an could not even tell me what was wrong with it -diagnosed in drive way (with great help from DTR)wound up #4-5-6 inj. bad purchased at diesel shop from Bosch @370.$ each 120k later an rollin