So I hit the garage after coffee this morning and thought about priorities Spark, Fuel, Air. Got to have all three to be happy, but don't nuttin happen without spark.
I pulled the plugs, cleaned and gapped them.
Next up check the static timing again and be sure there's a spark cranking over by hand.
OK got spark
Fuel and air - decide to trust the start circuit to do what it should after I cleaned everything yesterday.
I put the plug in, set enrich to full, and push the starter.
whirr whirr whirr COUGH
again whirr whirr whirr COUGH
set enrich to 1/2 Whirr whirr VROOOOOM
followed by spit, sputter cough cough cough cough vroom cough cough croom cough
You get the idea, running but not great.
Set enrich to off push the starter
vroom cough vroom cough vroom cough vroom cough
shut it down pulled the plugs 1 was firing 2 were wet
ran the fuel screws in all the way and backed off 1 1/2 turns
install plugs push starter
vroom vroom cough vroom vroom cough
pull plugs 2 firing 1 wet
I chased it the rest of the day and I can't consistently get #2 to fire. It'll run briefly after cleaning the plug then foul out again.
I thought it may be the mag triggers for the MSD box, so I checked the magnet to sensor gap over 100 thousandths, too high for my taste. I cut shims for behind the sensors and got the gap to 50 thou
Still not firing on all 3. Not sure what to do next.
I think I'll swap trigger wires between coil 2 and coil 3, then move spark plug wires from 2 to 3. If the dead hole moves from 2 to 3 I have a coil problem.
I don't really think it's the coil as it will light off for a little bit before it fouls.
honestly, I think there may be a big puddle of oil in the crankcase that's screwing things up. I'm getting way more oily goo coming out the exhaust than I've ever seen on a healthy 2 stroke.
At least it made noise today.