There are several things you might consider, first off I don't know what plug you are using but you might want to try one step colder on your spark plug. Here is an excellent article on reading spark plugs: http://dirtbike.off-road.com/dirtbike/ridenet.tech/How-to-Read-Spark-Plugs/ArticleStandard/Article/detail/332655
RMX - operating system - was created in 1980.
Capsule rmx was created on 2007-10-10.
ATL RMX was created on 2009-12-07.
GSSP RMX was created on 2006-08-22.
check your points in the distribuetor for being burnt shut or your coil went bad.
on my rmx 250 1999 there is clear glass on motor thats your oil level
could be as simple as burnt spark plugs i would think it would run worse with a burnt piston but if its not smoking or anything the pistons should be fine so i would start with the plugs
No, that's usually water getting into cylinders.
Yes please
32:1
Bad plugs or plug wires. Blown head gasket or burnt valve. A compression test will eliminate burnt valve or blown gasket.
transmission may be shot or your starter plugs are burnt out or your fuel filter is broken