1997 RM250 jetting

[Dylan501]

I have a 97 two stroke the motor is rebuilt everything is great but after a ride it leaks oil from the exhaust all over the Dang swingarm and the brake caliper, we mix the fuel with super unleaded with 20 ounces of oil to 5 gallons

Any one know the right jetts? I guess that's all it could be right

 

[arnego2]

When mixing 32:1 as you do you need to ride the engine more at top rev than lugging around. It has little to do with jetting or premix ratios. It is after all unburned premix oil.

A good way to see if you run enough premix oil in you fuel you see in the crankcase where the fallout of 1-2mm determinants that you are good. Too much is a higher level and seeing none well you know :) Premix oils are not only there to lubricate the piston but primarily so the bearings in the crankcase.