It is a Speedfight 2, LC, BJ 2004 with WFS and electr. Oil pump As far as screwdriving is concerned I am not a full professional but also no bloody beginner. So a little experience is already available, nevertheless this scooter really gets me finished. The scooter was bought about 2 months ago and did not run. Sparke was weak and bluish, candle remained dry. No thing, Luffi disassembled and cleaned, carburettor also (brake cleaner, compressed air, etc) New candle turned in, ZK plug made new because the old one was brittle. Result: the candle now sparks strong blue, but remained still dry after countless attempts. A compression test then returned almost 7 bar at a mileage of 13TKM, which seemed to me a little too little. So Vario and LIMA opened up and emptied and look, both Simmerrings were clappy wet and the KW had plenty of play. So motor split, a bearing had only 3 balls and new bearings and Simmerrings installed, the KW I left it, because it made me a good impression after the knock test and even seemed like new. For this there was a new cylinder including piston the old looked no longer really great and a new membrane block which now really closes correctly. Compression is now at something over 9 bar should actually be extra-rich at least the ZK is wet now, but the engine nevertheless does not start. Start-up spray in the lollipop or directly into the ZK hole did not bring any success. again I have the feeling that a bit ignites but it is not enough that the engine starts. occasionally small smoke clouds come out of the exhaust (which is absolutely free by the way) I tried the different settings on the carburetor and nothing changed. currently I have the mixture screw out only three-quarters of a turn, because my other Speedy starts well with it. Today I noticed that the battery has only 12 volts. So I have a new and fully charged e Dran hung and that suddenly only had 3V. Then I pulled off all the plugs and measured until I arrived at the CDI. When the plug was plugged down the voltage remained at 12,7V. Do I have to look for a break in the cable or did I shoot the CDI? My CDI has 2 plugs, one seperate for the WFS. If I have to buy a new one, which costs almost 80 Euro the WFS must be learned as with the car and how does it work? can you even do this yourself? if the learning is done n must, could I take the old cdi only for the WFS (the circuit was ok) and the other plug into the new CDI? I also saw that there are CDI’s supposed to bridge the WFS, does that work or rather fingers away? Could it really be in my case that the CDI is gone and the scooter finally starts with a new one then or do you think that the problem could lie somewhere else? I’m curious about your opinions. SG Rob