I was crossing New Mexico in August in my 360. In the middle of nowhere (of
course) I suddenly got a slight noise increase, and lost 200-300 degrees on the
EGT of one cylinder.  No change in speed.  Diverted to Double Eagle in
Albuquerque.  They cleaned the injector for that cylinder - no change. Next we
pulled the lower cowl to get to the bottom plugs and whalla, the exhaust
manifold had a huge crack just below the flange allowing exhaust gases to
escape so the probe for the EGT wasn't getting as hot. They welded it back up
and I was on my way.

So the obvious (the injector) wasn't the problem at all.

Matt McManus
LNC2 360

Quoting Dan Reagan <dreagan@fuse.net>:

> About 10 flight hours ago my #4 EGT dicided to start running about 150
> degrees less than the others.  This is a FADEC engine so there is a
> possibility of injector problems but other than that please give me some
> ideas what has changed.  The temp shows approximate correct ambient temp when
> shut down overnight.
>
> Any help would be greatly appreciated.
>
> Thanks,
> Dan Reagan
> IVP TSIO550 450+hours