Most likely a little lean on the top. We have that problem when the weather is really good. On Feb 12, 2014, at 9:11 AM, KENMUN at aol.com wrote: > > took the tr3 to sebring last week end. ran ok except for a miss that occurs > above 4500 rpm. car runs stock dissy and coil. components are relatively > new. plugs look good. any ideas? thanks ken m. vintage tr3 racer