I’m really at the end with my Latin, since he didn’t start yesterday I tried everything, he got compression, he got air and sprite (he just cleaned the carburettor) he had a spark and the control chain or something didn’t skipped either. But he behaved strangely yesterday, he sometimes did without a reason power loss where he went from 50 to 30 kmh then the China spark plug that was in with the old ngk zünderkerze replacing the one in front of it was, after that when you drove uphill and gave full throttle he squeaked or had such a tick, which only occurred at 20-50 kmh and disappeared while taking away from the gas again, I really don’t know what can be wrong anymore but my father thinks it might be that a valve doesn’t close properly and that he sounds funny