How old is the machine? This sounds like classic symptoms of leaking crankshaft oil seals. This is death to a 2 stroke, because they rely on an airtight crankcase. If the seals are leaking, no crankcase compression = no go. The only option other than replacement is a complete engine strip. Seals cost pennies, but the cost of the labour involved means you will have go do the job yourself.
phil_saunders@bigfoot.com
Phil Saunders
May 2008