GEM HP Palm Computer

[patrolpilot]

Nice work recovering the data! Yeah, probably something related to a wire or plug.

Below is from Things That Effect CHT"

"Failure of one spark plug or magneto can also affect CHT, because the air-fuel mixture takes longer to burn when it is ignited by only one spark plug instead of two. This causes θpp to occur later and CHT to decrease".

[wslade2]

shows value of engine monitor
once had similar situation of a cooler cylinder. plugs and ignition harness did not fix. Was bad distributor cap/rotor found at magneto overhaul.