Hi -


Michelle P wrote:

I thought about this a while. The best I can come up with is one mag
is mis-firing and your cyl 5/6 engine monitor sensors are
reversed. Have you checked the impulse coupling on the magneto(s)?

As Jim indicated, the magnetos are shower-of-sparks type. I wonder if
the magnetos are exonerated by the fact that this is an after-start
situation (so the starting portions may not be relevant), and that the
condition persisted with each magneto alone.

Thanks to others for the suggestions of injector clogging and the
infamous Lycoming sticky valve "morning sickness". I hope it's not
the latter.


- FChE