Wojtek, what I saw and heard today from your AT 400 sounded like a bad or clogged fuel nozzle. I can say with confidence that you did put oil in the fuel
If you noticed today everytime you spooled down you had the classic sign of unburnt fuel, ( the white smoke). Your motor never sounded like It ran with any kind of stability[
] My best guess would be that the incomplete combustion ( white smoke ) is whats causing the roughness and popping we heard today. Sorry I had to be the one to win the bet about how manny flights you would make before you had a problem, but at least I did not seize !
ORIGINAL: wojtek
Ben, I have thought of that myself ..here’s my take on it .. for several of the failures my ECU and pump have in fact been in with the engine for repair. Nothing was ever wrong with either The install is so simple in the king cat that it might as well be on a test stand. Once running, there is only the RPM sensor, EGT, and fuel line that run back to anything inside the plane, all of which is visible with the canopy off anyway. Besides today, all other failures in the air were associated by physically being seized, clanking, or some other mechanical unusual noise, etc ... I have not had the symptoms I had today occur before ( not exactly) but what it all comes down to is that the engine QUIT IN FLIGHT and FAILED, it was one flight ago that the engine ran fine, idlea and all for 4 flights .. then it seizes up , and not it not only quits in flight, it wont run right on the ground either ... I no longer feel like a guinea pig, .. after today, its more like a LAB MONKEY ! At this point, I’m sure if I send everything back in to AMT again, sure, they will fix whatever is wrong NOW, and it will just quit on me in flight AGAIN
... hey, last time I had 4 flights before a failure, the time before that it was 1, time before that almost 20 ... so the lesson is, AMT = Russian roulette .., I’m getting tired of this .. sorry I’m going off like this .. I’m just still very ticked off like this ....
Oh, by the way, 2 struts on my king cat are now also slightly bent after a closer inspection all thanks to AMT !!! [>:][>:]
Wojtek