Hi guys, I have a question: An acquaintance has driven with his scooter with far too little oil, about 100ml. Now the scooter in cold condition starts badly. If it is warm, it goes smoothly. Since with the old oil residue a few metal parts have come out, I think that maybe the piston rings have already got something off. But what I can’t make a rhyme of is the following: We have removed the spark plug and sanded a bit and cleaned, then by e-pcs arter and Kickstarter saw if there was a spark…and there was no one. Again built in and the part still jumped on.??!! I wanted to replace the cylinder and the piston and so on now, because I think, as I said, that they already have a damage. But where does the problem with the spark come from????