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If
your CHTs for that cylinder is in the normal range and engine is running smooth,
I'd be suspicious of the integrity of the EGT thermocouple. I had one do
the same thing; it would read normal until about 1100F-1200F and then it would
drop 200F-300F less than the other EGTs. Changed out the TC and it was
good-to-go.
Chuck
About 10 flight hours ago my #4 EGT dicided to
start running about 150 degrees less than the others. This is a FADEC
engine so there is a possibility of injector problems but other than that
please give me some ideas what has changed. The temp shows approximate
correct ambient temp when shut down overnight.
Any help would be greatly
appreciated.
Thanks,
Dan Reagan
IVP TSIO550
450+hours
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