Hi, I got myself a Chinacrosser for very little money (125ccm) with road registration. The motorcycle has a China engine in it, which is exactly the same as the engine of the old Honda CB 125 ( 156FMI ). When I got the moped it ran like a sack of nuts and smoke really VERY extreme, after which I decided to take the engine completely apart and look through and completely resealed. Said, done. Leg oil already let off the first scare, it was about 4-5 l oil in the engine (1.5 – 2 have to be pure) then cylinder head etc off and first inspect the running surface and so on exactly and then let my neighbour (Kfz Mechanischer Meister) look over it again and both found good. The bike also ran just 1000 km. So everything again nicely cleaned and ordered new seals, which arrived today. Directly installed, then immediately set valve play and roughly adjusted the carburettor (wherewith one hardly data on the Internet for and when there is something else everywhere) When finally everything was assembled again first start attempt. Jumped directly and without any problems and squirted still a little, but what I did first on oil and so on which was pushed from the assembly still on the piston and cylinder etc. but the smoke became again more until it again very strongly smoked, although not sooo extreme as before but still very strong. When the engine is cold the bike starts super well (at the first step or directly mi t E-starter) and takes on super gas. But as soon as the engine gets warmer it almost goes off (stand-by gas screw completely in) and does not take on gas, as soon as you give only slightly gas the engine apparently swallows up and goes off. Then you only crack it very badly again. What can that be? Nen motorcycle which is so badly tormented and no longer drives with warm engine I never get through the Tüv and from driving we don’t need to talk at all. Thanks already in advance for your Hi-Starter) and takes on super gas. lfe. Mfg kalfactor1 P.s. it is an air-cooled engine