This 40-year old Tecumseh has just had a new carburetor, so the
carburetor is pretty much ruled out. The plug is brand new, and
I just replaced the air filter.
under load, and run at medium to high speed, the
engine runs unevenly. The misfires are somewhat random. The engine
rarely dies. I would say there is rarely more than one firing failure
in an "episode," and when the engine next fires, it emits a puff of
smoke, signifying a rich condition. Then it will run fine for a few
more seconds before another "episode."
I have not checked the points, but have bought a new set and
a new condenser. I have not checked the head bolts for tightness,
nor the condition of the shut-off grounding wire. Have not lubricated
or checked the governor arm. The muffler leaks slightly.
Could someone please indicate where they would go next, then
where, then where, etc.? Of course I would like to avoid pulling the
Help much appreciated!