You learned something - I learned something! A good day! One thing I already knew - open up the doors, or better yet do it outside! Smokes like crazy! I use propane, usually in a vice, but that MAPP gas seems to work a lot faster. I have one of those vices you can clamp to something and I put it on my outside bench and that works way better than smoking up the shop. I think with that trimmer it was a combination of the parts being partially clogged and maybe the catalytic converter being mostly clogged that caused the issue. Thanks for this one, Dave!🔧👍

I had a Ryobi string trimmer. Would not run, until I cleaned the car. Great catch. Take care.

Good stuff. No boring parts at all.

Good catch Dave, you have an ear for what you are doing! Do you think all of that carbon build up is from normal use or is the owner mixing in too much oil?

Ulitepilot aka Zombie Dave what kind of 2 stroke oil do you use