onealmck

I will spend some time with it this weekend and let you know what if anything I learn. Thank you!

I put a new plug in it as well as a new coil actually. The parts are relatively inexpensive and even though my spark seems strong I am tired of messing with it. In any case, I'm using an NGK plug. Same as what came in it from the factory.

I've run just about everything in it but when I started running into issues I put 91 octane non-ethanol gas in it. I don't think bad fuel is the issue. I have had several people tell me they are finicky with gas. Just the same I might drain the tank and put fresh fuel in it and see what happens. Can't be worse!

I did run a quick compression test and I seemed to have decent compression. It's been a few weeks ago so I can't remember the number but I'm thinking it was in the range of 145 psi. The plug is covered in soot very quickly. I replaced the mass air flow sensor as it appears that the fuel mixture may be way too rich but I'm not sure.

I have a 2019 T-Boss 410 that died one day after we parked it. It had been getting harder to start (had to hold the throttle down) for some time but would not start. The starter clutch seized while I was trying to start it. I replaced the starter clutch and it will not start. It appears to have solid fuel pressure and solid spark. It "fires" but will not actually run. The exhaust gets hot after cranking so I know that's actually firing but it won't fully start. Any ideas?