Thanks for Your responses.
My plugs are grey, no oil on them. The tailpipe is nice grey too. I see small amount of carbon in the combustion chamber and on the top of the piston on the endoscope camera, but it seems normal to me. The engine smoked at idle before, but I adjusted the carburetor, and it works fine now.
I think the oiler drips oil onto the rocker arms at the intake valves, and they splash the oil, especially at higher RPM-s. I think, but I do not know. I see to drip very small amount of oil when the engine is idling, and I see oil splash on the manifold at higher RPM, but not much at all.
I would like to see some photos, post them please!
Thanks again, Mihaly
Last edited by TiredOil; 07/26/22 04:15 AM.