Is black oil dripping from your exhaust?
I have a big problem because I have everything dirty on the back od kart. After riding, the helmet, seat, exhaust axle and engine are dirty.
So far, I drive to around 6.000-8500, max 10,000 rpm, on a large asphalt square.
Iame Leopard engine, Tillotson HL 334a carb, after rebuild.
The factory settings are very rich, currently I have the L45 ‘and H45’ setup. At lower values, the engine starts to revolve poorly, it chokes. The spark plug is black, slightly wet. Motul Kart Grand Prix oil, 5%. The spark plug temperature is according to the service manual. After each session, I have to wipe everything, everything is black oil. In YouTube videos or photos, I haven’t seen anyone who has the same engine had everything so dirty. I know the revs on the track are different, but it’s a nightmare.
On my settings, during the warm-up on the stand it is quite ok. At the factory settings, the carburetor was still dripping from the carburetor and the exhaust oil was flying everywhere.