Today I went back to hopefully get the engine running better. Last time I noticed that with one magneto switched off, it was running on less then 5 cylinders. Also noticed 2 really oily spark plugs.
So today I cleaned all 10 plugs, and ran the engine twice, for about 10 – 15 minutes.
Yes its running nicely now on both magneto’s individually. And checking the spark plugs afterwards, they are all looking good. Some are a bit to clean, indicating a mixture that’s maybe a bit to lean (fuel / air ratio a bit to low, so not enough fuel). This makes it run hotter. And yes that’s what I see. Trying to stop it running, doesn’t work, it keeps on igniting as its to hot inside, so I think I definitely need to change the mixture ratio. Make it richer……. That’s for next time 🙂