My Dodge Ram 1500 5.9L is pulling code p0308. This is from what I understand number 8 cylinder misfire. The truck runs rough for when I start it up in the morning or start it up from sitting for more than a few hours. I clears right up and runs like a champ after I get going for about a mile or so. All of the rough running just seems to go away and it starts running great. Any insight on what the problem may be. I wouldnt think that it was anything mechanical, because it clears right up after about a mile. But I am not sure about that either. Any help would be appreciated.

Thanks

 

Start with a good tune up.