Troubleshooting Motorcycles 

General Resources
http://www.dropbears.com/bikelinks/Technical/
http://www.dropbears.com/bikelinks/Technical/Troubleshooting/
http://www.dropbears.com/bikelinks/Technical/Motorcycle_Maintenance/

Troubleshooting Twostrokes

1) Engine won't start, or difficult to start

Check fuel (quantity, condition, type)

Check spark

Check compression

Twostroke Resources
http://www.members.tripod.com/Howtuz/smengines.html

http://www.ultralightnews.com/enginetroublshooting/start.htm

http://www.dropbears.com/bikelinks/Technical/Two_Strokes/

2-Stroke Articles & Info - http://www.macdizzy.com/2stroke.htm
 

Stuck Rings

                Here is a method I've invented to remove gummed up piston rings on old pistons. This works most of the time for me and I was using it with a can of GT 85 plus a blow torch during the week on an old piston with unobtainium piston rings.. All were saved!!

OK firstly inject penetrating oil into the ring gap of the offending piston with gummed up rings.

Next play a blow torch onto the crown lightly and hey presto, the oil boils and pushes the rings out. Works most of the time.

Regards,
           Andy.