Has anyone else experienced small amounts of oil leaking around the Hall/RPM sensors on the back of the engine block?

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Thanks, I installed new (larger) O rings a couple of months a that fixed the problem...

Me too.  Got the new o rings from Wicks and put some red rtv around them and the area is now dry. 

O-ring update. After about 30 hours the larger size O-rings that I used (mentioned in an earlier message) started seeping again. Not badly, but zero leaks is nice. This time I used slightly larger 17mm X 2mm O-rings from the same kit. The sensors were a little harder to push in, but so far so good. If they leak again I will use RTV on them.

Finding indications of small oil leak in my engine compartment. Where/how did you notice the leak from the Hall sensors? I mounted a tool box behind my engine and it gathers a light sheen of oil after about an hour of flight. My breather hoses have oil on them, but I cannot see how they could leak. I am not seeing any oil around the sensors.

Replaced my front crank seal. Found a “nick” on the crank. Shipping engines, even in original create is a rough endeavor. Smoothed it out and so far, about 5 hours, it has not started leaking again. This leak may have hidden rear engine leak.



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