Hello together, I think this will be a lot of text… As you know, people often come to me with their lay Latin at the end. Since I have already made a lot of vehicles, everyone always believes that I could always help and speak vehicle Latain. This time I don’t know any more, so I end up with my Latin. At the moment a Kymco grand sink 50 of the 2 clocks had already 4 times a piston clamp or piston eater last year. The scooter has about 6500 kilometers The first piston clamp came in the spring on one of the first rides of the year without any apparent reason and the scooter ran then even to home with low power. So it said the girl, which belongs to the scooter. So in the workshop a new piston and cylinder was installed. Roller ran about 100 to 150 kilometers. Then complete piston eater nothing more went. Now the girl came to me. So I got the The engine was completely separated. Changed bearings, shaft, head and cylinder. Roller ran perfectly again. This time about 230 kilometers. Roller meant to have to get a clamp again. Then I changed the cylinder head and cylinder again. This time directly mixture, because I thought the mixture would not work properly and would not be sufficient or even not produced in between. Pustekuchen also so it came to the light clamp again, this time only 50 to 80 kilometers later. I then had my accident, the scooter was then again in the workshop. Everything back to original condition built there and installed new oil supply. Roller ran again. Until last week and also only 100 to 120 kilometers. I would like to help, but again cylinder head, cylinder, shaft and bearing would not be the right solution… must be something else… Still someone an idea I have not yet thought of, why he always makes the bitches again? Should I perhaps advance were to buy a complete used engine, that is there on classified ads I think cheaper than to change again and again what?!