The rebuilt engine in my 82SD barely runs! I'm fairly certain its related to the fuel not igniting and/or not delivering properly. Maybe the fuel is so bad even though it looks and smells normal, maybe I have air coming in that I can't see (all filters are new) or maybe there is something major wrong with the IP. Valve and IP timing are where they should be, unless I have IP off by 360 degrees. Like I said, STUPID