Last flight, I noticed that 1 cylinder's CHT was all over the place. Rapidly going up and down. The EGT on same cylinder was rock solid and never varied. All other cylinders were steady on cht/egt temps. No difference on engine performance. As I was landing, probe showed cylinder cooling and on taxi, the temp was in line with the other cylinders.
My thought is a probe going bad, loose probe, or loose connection. For all I know, it could be a fluke and a one time event. However, as this is a one time event, I'm just guessing at this point.
Anybody seen this before?
__________________
Webb Willmott
Jackson, MS
N32WW
I saw this exact same thing on my Dynon. I swapped the probe with one on another cylinder and the problem followed the probe. I bought a new probe and the problem was solved.
__________________ "What kind of man would live where there is no daring? I don't believe in taking foolish chances but nothing can be accomplished without taking any chance at all." - Charles A. Lindbergh Jamie | RV-7A First Flight: 7/27/2007 (Sold)
I agree, it sounds like a probe or wire problem. Try swapping it out with another cylinder and see if the problem follows the probe.
OK, so Jamie types faster than I do!
__________________ Mel Asberry, DAR since the last century.
EAA Flight Advisor/Tech Counselor, Friend of the RV-1
Recipient of Tony Bingelis Award and Wright Brothers Master Pilot Award
USAF Vet, High School E-LSA Project Mentor.
RV-6 Flying since 1993 (sold)
<rvmel(at)icloud.com>
CHT fluctuation on 1 cylinder
Linear Mode
