Yep XXX, I had not diagnosed it down to that either, I guess we given more than a few red herrings. Did he say it got better at high power, never achieved full power, and was still running rough on the taxi in ?
I think this is yet another reason why defects are not written up. I didn't mention it, the title of the post was "O-320 Crapping Out"....
I have a chat to the pilot's and get them to write the defect in my words. It looks much better at the end of the day..
I am trying to remain positive here, I still have my head firmly lodged down the lion's throat on the other forum.
I thought repair by mechanic was better than 'repair by forum'..
I was non too polite about the wisdom of not turning back immediately as well.
I once had an engine problem (inlet valve) in a light twin, with a tv news crew on board.
The aircraft threw itself in a turn back to base at exactly the same time as I started the trouble checking drill etc... ( about 1 second after the backfire) and well before the radio call went out.