Excessive vibration

[Rick Erwin]

I agree with mshac in that your best clue to the vibration is the cool #2 cylinder. Figure out why there's no fire in that cylinder.

Your 150-rpm mag drop is right at the limit for my TSIO-360CB. Yours might be different... Perhaps once you solve the cool cylinder issue your mag drop issue will be better also.

As for the increased force to move the rear prop lever ... If you have prop-sync, that's most likely due to the rear prop lever moves the prop-sync controller which is on the rear-engine. On the front engine it's a direct linkage to the prop-governor ... as I understand it. I had the same question when I got my plane and that's what I was told.

Rick