one cold CHT.

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2 weeks 4 days ago #2222 by STEVE ELLS
Replied by STEVE ELLS on topic one cold CHT.
I suggest you do the GAMI "lean find" testing to determine if #1 is getting more fuel. A description of the test and the test work sheet is on the GAMI website.

The next thing would be to swap the #1 cylinder CHT probe with a CHT probe from another cylinder. If the "cold" follows the probe, you know it's the probe.

Try those tricks.
Let me know what you find.
Steve

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2 weeks 4 days ago #2221 by richard heinichen
Replied by richard heinichen on topic one cold CHT.
I’m not sure what JPI probe is installed. It is not the spark plug types it has its own threaded hole. Since I have the Gami jets the other 5 cylinders are rock solid with very even temperatures.
It’s reassuring that you have the same symptoms.
I do have the Cessna cylinder temp gauge but it shows a overall range not individual cells. I do dump the information and send to Mike Busch. They just scratch their heads. Not to worry is the reaction. I was thinking that maybe #1 is getting more fuel?
What do you mean about going primary?
Thanks for the reply. Good to talk to a S person.

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2 weeks 5 days ago #2220 by DARIN DIVINIA
Replied by DARIN DIVINIA on topic one cold CHT.
I have a 182S. Same problem.

Do you still have the factory CHT?

If so it is using the screw-in probe location. Then your JPI is on a spark plug type sensor or they actually offer a potty back sensor to the factory,

Regardless I could never get CHT 1 on my JPI edm-700 to read like the others. Going primary on the JPI and dumping the factory CHT seems to be the only fix,

What CHT probe are you using on #1?

D.

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2 weeks 5 days ago #2219 by richard heinichen
Anyone ever have a cold CHT on #1 in a 1999- 182S?
I asked the smart folks (lycomming) at Oshkosh last year and no one knew. Swapped leads. Installed new probe. Has a JPI 830. Gami's the number one is always 70 degrees cooler or more. Savvy says don't worry. Well I do.
Thanks.

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