Reply To: Petter A1 backfiring through exhaust.

[charlie]

William, the click you are listening for is the magneto impulse. Not all magnetos are fitted with them, it nay be that it is the wrong magneto. There should be a small plate on the magneto giving type, if you could post that up on here it will help identify what magneto you have. Also which model of Petter A, and serial number as looking at the Wico magneto information I have several different magnetos were fitted over the years.