CatIronSlave
Registered User
friend has an 03 6.6 he changed the fuel filter primed it till no bubbles came out just fuel. He drove it for quite a while and the idle was rough i think the term is "hunting" and now it is hard stating. is it just air he didn't get out of the system. or something else, i told him hes having trouble simply because he didn't buy a cummins but i'm not sure you guys will agree with me