Hello a little background first. The engine does not have mags, it has dual pmags so I know it's not the impulse coupler. I've overhauled this engine last year and had all internal parts yellow tagged and assembled the engine with new Lycoming cylinder assemblies. I'm having a valve train noise that I can't track down. Don't know if this is normal or not and only noticed it when I pulled my plugs out to change them and rotated the prop. Since the video I've pulled the pushrods and the hydraulic lifters out and the noise has stopped so I know it's coming from the valve train. I've pulled the cylinders today to check the cam and tappet bodies and they are perfect as would be expected from a engine with 1-2 hours of run time. Any idea?
Thanks
Bill
https://m.youtube.com/watch?v=FC-_le1nOoM&feature=youtu.be
Thanks
Bill
https://m.youtube.com/watch?v=FC-_le1nOoM&feature=youtu.be