Wandering EGT
in 912 / 914 Technical Questions
12 years ago
I flew yesterday and noticed the EGT on my right bank was higher than the left bank. It seemed to wander around at different throttle settings. I have a Grand Rapids Tech EIS and monitor both banks.
I checked the obvious, nothing in the carb bowls, removed the carb tops thinking maybe the rubber diaphragm may be bad allowing the needle to move around some. It appeared to be supple with no holes or splits. The slide had oil on center section and moves freely up and down,(should this be oily or dry). The EGT sensors for both sides read the same with the engine off, so I believe they are correct.
I can't see anything obvious that would cause this,the engine has 800 hours,
Anyone got any good ideas
Dale
I checked the obvious, nothing in the carb bowls, removed the carb tops thinking maybe the rubber diaphragm may be bad allowing the needle to move around some. It appeared to be supple with no holes or splits. The slide had oil on center section and moves freely up and down,(should this be oily or dry). The EGT sensors for both sides read the same with the engine off, so I believe they are correct.
I can't see anything obvious that would cause this,the engine has 800 hours,
Anyone got any good ideas
Dale
