Hi,
Went flying for an hour this morning and everything was fine...Came out of the FBO fired up the airplane to go back home.
On climbout D10 showed alarmingly high #4 CHT and oil temp....The other CHT's were high too but the #4 is the hottest.
Thinking we had a serious engine problem we returned to the airport and pulled the cowl and plenum and found nothing obviously wrong...epected to see a dead rat on tp of the #4cyl blocking the air to the oil coller...Nothing all baffles in place, it was perfect.
Took off again and I seemed to be able to keep the temps stable but at redline
Then the tach started jumping around and the CHT's came down but not the oil temp...After a scary but uneventful landing (IMC) we taxied off and one of the EGT's went suddenlt nuts, like 2000F...clearly impossible.
So I'm thinking this is an instrumentation issue and I don't have an engine problem (hard to see how the high CHT and oil temp would be related unless I holed a piston or something...all cyl's had good compression) at all.
Have you any clue?...I was thinking maybe a bad ground but the unit has been working perfectly for 45 hours...I did do firmware upgrade (1.08)before I flew it today.
Thanks
Frank
Went flying for an hour this morning and everything was fine...Came out of the FBO fired up the airplane to go back home.
On climbout D10 showed alarmingly high #4 CHT and oil temp....The other CHT's were high too but the #4 is the hottest.
Thinking we had a serious engine problem we returned to the airport and pulled the cowl and plenum and found nothing obviously wrong...epected to see a dead rat on tp of the #4cyl blocking the air to the oil coller...Nothing all baffles in place, it was perfect.
Took off again and I seemed to be able to keep the temps stable but at redline
Then the tach started jumping around and the CHT's came down but not the oil temp...After a scary but uneventful landing (IMC) we taxied off and one of the EGT's went suddenlt nuts, like 2000F...clearly impossible.
So I'm thinking this is an instrumentation issue and I don't have an engine problem (hard to see how the high CHT and oil temp would be related unless I holed a piston or something...all cyl's had good compression) at all.
Have you any clue?...I was thinking maybe a bad ground but the unit has been working perfectly for 45 hours...I did do firmware upgrade (1.08)before I flew it today.
Thanks
Frank