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I'm confused about something. Let's say it's daytime and you are in a class G airport where the overlying airspace is class E, dropping down to 700' AGL (Inside the Fuzzy Magenta Circle). If the visibility is 1SM, you can legally take off in the class G airspace. BUT...as soon as you reach...

That fixed it! Thanks.

So my EDM thinks I’m out of fuel. I select the option for full fuel when the unit starts. But immediately it reads “0 REM”. I suppose the transducer could be bad, or fouled, but I would have expected a different message (according to the manual). Has anyone experienced this?

Very useful, thank you.

On a lycoming 0-540, which magneto powers the top plug on cylinder #6, and which powers the bottom plug? I can trace the lead, but I’m not sure which magneto is considered “left” or “right”.

If the lead is in direct contact with a 1300F exhaust pipe, could it affect the readings on the display?

My JPI EDM-800 installation guide says not to route the probe wires near hot areas, such as an exhaust stack. Of course, this is almost impossible given that we are probing a hot engine, after all. What affect does heat have on the probe lead? Will it cause incorrect readings? Will it melt...

So true. This site has proven to be a wealth of knowledge for me. I’d love to give back, but unfortunately because the engine is already at TBO and I vowed to myself that I would perform an overhaul at the slightest hint of mechanical trouble, I made the decision to get a remanufactured...

It was full rich.

I too thought perhaps a faulty sensor reading, but the engine was vibrating abnormally for about 5-6 seconds. So, obviously some sort of actually problem, not just a sensor.

Can a stuck valve suddenly "unstick" and return to normal?

That's what I was thinking.

It didn't literally read zero, it's a digital bar, not a number. It was so low it didn't register on the monitor. (I editing my post to reflect this)

I have a 1979 Piper Dakota with a Lycoming O-540. While turning final today, the engine suddenly developed a mild vibration, and the EDM indicated the #4 cylinder (CHT and EGT) had very low temperature reading, as if the cylinder was no longer firing. All the other cylinders read normal...

If the urge no longer exists, don’t fly—So what? People change hobbies all the time. I once had a large sailing yacht. I had to pinch myself every time I saw her—I adored this boat! 5 years later, meh, not so much. Onwards and upwards!

My CFI disagrees. Can anyone cite a FAR that conclusively clarifies whether allowed/disallowed? (My CFI can't)

I tried to answer my own questions from the FARs, but can't find anything conclusive. Can the owner of an aircraft--who holds a student pilot certificate--move said aircraft on the ramp for reasons that don't involve flying? For example: My plane needs fueling before my CFI arrives for a...

Not very dirty at all.

I plugged a few holes in the baffles and cleaned the cooling fins on the cylinders. Took it up the next day and the numbers were perfect. So, the problem has mysteriously vanished. Could sitting up for 6 months have caused a hot cylinder on first run? thanks everyone for your feedback.

Just the #4 cylinder is that hot.