Misfire diagnosis

[Erich]

Hi John, I did try it with No 1 disconnected and it seemed not to change, though hunting. I was getting good spark at all plugs initially. Your mention takes me back many, many years when I had a Mamod steam model. There was a part, as I recall, which needed periodic cleaning in paraffin. I asked my mother for some and was handed a block of wax. Needless to say, I didn't get very far melting the paraffin, before I was corrected in the nomenclature.

Thank you for the help.

Erich in Seattle