Michael Burbidge
Well Known Member
I recently installed an JPI EMD-740 engine monitor. It is revealing some interesting information.
On my first two flights I'm noticing that my #4 cylinder EGT and CHT drop off under high power scenarios.
And when I climb to altitude (9500 ft.) both the EGT and CHT steadily decline on the #4. #2 exhibits the same behavior but not so drastically.
This is an O-320. I would like to figure out what is going on here. Do you have suggestions on the first things to check?
Here's a look at the logs. I've annotated it with a description of what was going on during the flight. Here's the link to savvyanalysis.com if you want a closer look: https://savvyanalysis.com/flight/2537164/4b9c6423-cbf7-46db-a30f-e838ff4acb72
Without the engine monitor I have not noticed anything unusual about the engine, in terms of sounds and vibration.
On my first two flights I'm noticing that my #4 cylinder EGT and CHT drop off under high power scenarios.
And when I climb to altitude (9500 ft.) both the EGT and CHT steadily decline on the #4. #2 exhibits the same behavior but not so drastically.
This is an O-320. I would like to figure out what is going on here. Do you have suggestions on the first things to check?
Here's a look at the logs. I've annotated it with a description of what was going on during the flight. Here's the link to savvyanalysis.com if you want a closer look: https://savvyanalysis.com/flight/2537164/4b9c6423-cbf7-46db-a30f-e838ff4acb72
Without the engine monitor I have not noticed anything unusual about the engine, in terms of sounds and vibration.
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