Hello, I flew out the spark plug one morning. Now I have a new thread insert in it, the other 7 candles provided with Loctite (hold 100,000km and until then eater away anyway). Now I let him run again today for the first time. At first he didn’t want to…. then he came with a rat and knatter… now I have it now that he runs quietly in the stand but a slight blubbering comes out of the exhaust. It seems to me as if he only on three Zy How do I get out which candle it is? My diagnostic device doesn’t show it. No mistake. Or maybe a coil is broken? by the pressure of the spark plug out maybe? Please for help or for a few tips. Greetings Timy