Clouddog
Joined: 02 Jun 2016
Posts: 119
Location: Lebanon, TN
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 Posted: Fri Jul 10, 2020 4:36 pm Post subject: Cylinder Head Temperature Gage **UPDATE & RESOLUTION** |
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A quick update regarding my faulty CHT gage in front cockpit. First of all thanks to all that provided input. So I swapped gages. Same issue so not a gage problem. Good, I finally saved some money. Started inspecting wiring. Dog gone wiring! On the brass ring that goes under the spark plugs, there are two 12 gage wires that are silver soldered to the ring. One had broken from over the years of pulling plugs. There is a 6-8" pigtail that is part of the copper ring that ties into a longer wire going to the gage. Decided to replace the entire pigtail with new. Thanks to Doug Sapp, he had them in stock and low and behold my fellow part time mechanics, took aircraft up this morning and I now have a working and accurate CHT.
On another note, after the pigtail there is a very long wire heading to the CHT gage. Mine was in ok shape but there was 2 extra feet curled up behind the firewall. I was about to use the extra to rebuild the system in the engine compartment. Doug stopped me before I did it as this is a balanced system and removing any wire along the entire route throws off the readings. Again, thanks to Doug for the parts and wisdom! Now to try and get my heading gage working correctly. Hang in there Justin, we will figure it out.
Thanks for all y'alls input and happy flying.
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