Lycoming's Thoughts on Using EGT for Leaning

[Highflight]

I ran across this article that I thought would be of interest to many builders using Lycomings or clones.
So here it is:

http://www.geocities.com/sf260d/article/exhaust.html

[gmcjetpilot]

Here are two very good references. They are published from two companies that make engine monitor, but they have great insight and info on indications (CHT/EGT/FF/OT) mean for normal and non-normal conditions in a Lycoming engine:

"Leaning and diagnosing engine problems" by Electronics international. It starts with a detailed explanation of how the engine works. This is a fantastic source of info and understanding of engine operation:

Leaning and diagnosing engine problems


"JP-700 pilot guide" - Good info of what differnt parameters can mean (section 3 - Interpreting data)

Electronics International JP-700 engine monitor Pilot guide


Cheers George