I just swapped framed on my 660 and before I worked on it this thing ran great. Started it up, which was immediate, it started smoking a little and I thought it was just grease from the frame swap and would burn off so I drove it a min. It runs ok at low rpm but when I tried to go faster it was missing. When I stopped it smoked like crazy. I’m puzzled as to what happened bc it has been sitting for 8 months and I started it often. Only thing I did was lift it by manifold and I did torque the manifold a bit trying to get new starter in but if anything I would just have an exhaust leak from that. I not to keen on terms but I assume there is oil leak in head, so I assume I have to pull engine??

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