Thanks guys - both valid points - I will indeed try the "faulty or noisy" plugs again.
Jeff


Case in point:  I spent most of last winter trying to get my Corvair engine to start.  It would occasionally try, but just would not run.  I finally pushed on the wire between the coil and distributor, and felt a click.  The wire boot was holding the wire on the post, but there was enough of a gap to break the connection.  Once I 'clicked' it into place, the thing spun right up.

You may have just had a loose plug wire.


On Tuesday, September 1, 2020, 9:52:34 AM EDT, Charlie England ceengland7@gmail.com <flyrotary@lancaironline.net> wrote:

Don't forget that when we change something, we often change something. (Else.). :-)

Since power wasn't affected, the safe and real test would be to re-install the plugs and fly. Same problem: almost certainly bad plugs. No problem: likely either you cleaned up a bad connection somewhere, or the ignition system had moisture on/around it, that got baked out well by the time the engine cooled off after the last problem flight. Which would drive me to close inspection of all terminations, coil housings, etc.

Charlie