i have a peugeot speedfight 50cc and it will not start the spark plug has oil but i cleaned it and it still doesnt start my mate said the the piston rings are gone but i dont no how to fix it or how much they are i want to fix it but i dont no how.

karl thackeray, October 2006

Hi Karl, you could try a new spark plug to rule out that problem. The piston rings are there to create a seal so your engine has compression. There should be some resistance when you kick the engine over, which will not be there with the plug out. If there is no resistance (compression) it may be the rings, or summat else in there. If the plug repeatedly oils up your crank seals may be leaking. Check the level of your gearbox oil.

Gary, October 2006