petehowell
Well Known Member
On the flight home from Boseman last week and on the trip to Iowa today, I noticed that my CHTs and EGTs (all 4 of each) were high and fluctuating pretty wildly(+/- 75degF per sec). The engine was running great and the fuel flow told me I was LOP and running normally.
Oil temp/press was normal. Voltage was normal but fluctuating slightly from the normal 14.2 V. Manifold pressure seemed a bit high in cruise.
All readings were rock solid and normal on take off, crazy(as above) in cruise(7500 msl on the way down, and 3500 msl on the way back), and stabilized/normal as I came into the pattern at KLVN where I waited out the thunderstorms. They were stable (and normal) all the way home from LVN to ANE a bit later. This flight was done at 2000ft msl.
So I was stable at low altitude/high power(takeoff), stable low altitude/low power(landing at LVN) and stable on the short hop home (low altitude/medium power). This leads me to think it is altitude related, as odd as that sounds.
I did try switching off each ignition in flight - with no effect.
I'll send this to Dynon support, but I know the gurus here like a bone to gnaw on over the weekend. I'd appreciate your thoughts.
Oil temp/press was normal. Voltage was normal but fluctuating slightly from the normal 14.2 V. Manifold pressure seemed a bit high in cruise.
All readings were rock solid and normal on take off, crazy(as above) in cruise(7500 msl on the way down, and 3500 msl on the way back), and stabilized/normal as I came into the pattern at KLVN where I waited out the thunderstorms. They were stable (and normal) all the way home from LVN to ANE a bit later. This flight was done at 2000ft msl.
So I was stable at low altitude/high power(takeoff), stable low altitude/low power(landing at LVN) and stable on the short hop home (low altitude/medium power). This leads me to think it is altitude related, as odd as that sounds.
I did try switching off each ignition in flight - with no effect.
I'll send this to Dynon support, but I know the gurus here like a bone to gnaw on over the weekend. I'd appreciate your thoughts.
