I have several issues

[carl_nank]

Maybe we can take care of them on one post.

1. After initial run-up and a taxi test, my cylinder 1 CHT reads 99 deg. with the engine not running, as opposed to the others at a 66 degree ambiant temperature. Did taxi test cause a CHT probe to destruct? The engine sounded fine.

2. Oil temperature configuration:
The "LO GRN/YEL: and the "BOTTOM YEL": can only be set down to 80 and not below. My Superior IO-360 says, "Do not start run-up until the oil temperature is 75 deg or above". I was wanting to have a yellow line from "0 deg" to "75 deg" so I could accuratly determine the Run-up temperature. Is there something I can do to set the config to below 80?

3. I cannot find anything in my engine manual that leads me to calibrating the EGT numbers and scale. Is there anything out there that can lead me down a reasonable EGT configuration path? I have read the post regarding the calibrations already in the EMS are not to be followed.

Thanks for your help.
Carl Nank

 

[jakej]

I'd check the connections on the CHT - recheck the pins at the 25dsub, that is where some problems emanate from. If you flex the loom while looking at the oins you'll find that they can move in and out sometimes resulting in a poor connection. Also check the coonectors near the probe - the probes are very reliable so the issue should not be with them, another check is to do a swap with another probe as this will confirm if there is an electrical connection issue.
Oil Temp - did you try setting the bottom yellow level first ?

Jake J

 

[dynonsupport]

You can't set the low range of the graphics below 80 on the oil temp. The number will show right, so if you really want to get going before 80F, you'll need to just look at the number.

EGT's and CHT's reading -99 are basically always connection issues, or a damaged probe.

EGT's are highly dependent on where the probes are in the exhaust stream, so there is no absolute number that is correct. It has more to do with what your engine does "normally" and then getting warnings for abnormal behavior.