On Mon, 14 Feb 2005 18:35:51 -0500, "Mike W."
wrote:

Maybe 1-3 are getting dirty.

They used a bigger drill bit to clean # 4?

Roger Halstead (K8RI & ARRL life member)
(N833R, S# CD-2 Worlds oldest Debonair)
www.rogerhalstead.com


wrote in message
roups.com...
I've had trouble getting my IO360 to run lean lately - Cylinder 4 EGT
runs a coolest when rich, but when I lean, #4 peaks a LOT later than
the other 3, and at much higher EGT (1500+ compared with 1400+ on the
others. I'm just wondering whether the orifice on #4 could be worn and
now just running too rich generally?