I have a 04 f250 superduty 6.0 and whenwhen I take off from a light it has no power. barly gets through the intersection then it leaves a trail of black smoke and starts picking up and then its fine once you get past taking off. it has power at crusing on frwy just takeing off from light. at idle it sounds like a bucket of bolts its rough. I replaced #8 inj. it called for it no help put rev x in seemed like it helped but back doing it aging my egr. looked stuck open a tiny bit would that be it or what hope you can help thanks.