Originally Posted by bgoodsoil
I didn't have any carb cleaner. Maybe a jet was clogged.
We pulled the muffler off and looked into the exhaust port. There were streaks down the side of the piston. We had a bright blue spark and still couldn't get it to fire using starter fluid. I emptied the float bowl, there was a lot of water in it. We're getting fuel to the bowl. Jenna checked that with the bowl drain. The slide's moving fine.
Jenna got the good 2-stroke oil that's made for oil-injection. Changed the oil in the sump. 20w50 dino juice motorcycle oil. I kicked it with the muffler off and they saw a flame come out. Even with the low compression I expected to at least get it to run badly but it didn't run at all.
Putting on the Sherlock hat: I'd say somebody older owned this bike and they gave it to a nephew or a son. That guy happened to be a stoner teenager that runs it into a creak and causes all kinds of mayhem in the top end. Worst case scenario: bore the cylinder for $75, get new pistons and rings for $50.
Anybody know if a TS250 top end will fit?
Nope. WORST case scenario is rusted crank roller bearings, conecting rod needle roller bearings on both ends. I hope it's NOT the case, but I've done a few sleds that were sunk and set. The transmission calls for 10-30 oil, not 20-50, JFWIW when you get it running.
Too much is just barely enough.....
2007 Tiger 1050
2005 Royal Star Tour DeLuxe
1973 Yamaha TX750 1984 Yamaha RZ350
1974 Norton 850 Commando Roadster