Started having an issue with the EGT's on my number 3 yesterday.
RV-9A with IO-320 about 400 hours TT.
Cruising along at at 7500 feet LOP and the EGT would bound up and down bout 200-300 degrees.
I pulled to probe today and there is nothing obviously wrong with it.
Bad probe? Or something else?
Done and Flying 4/30/2015