Curtisb

Yes, I always lean with the edm730 past peak for the last cylinder, but I just wonder, it never peaked at this high fuel flow and began to run rough….I know it varies from flight to flight, but never before that much…. It never ran rough at 35 ltr FF…. It was always flying smooth down to 32/31 ltr ff in 5000 ft with 65% i think, I have to look on the spark plugs / ignition with more lean mixture I think maybe there is something to do

@carusoam No, in this case, it was the pilot on a 2 hours flight to enrich the engine to ROP to retry the leaning process like it is described on savvy , best regards

@carusoam what is some kind of strange, a few days ago i flew a check flight and did the gami test 3 times and the Peak was at 32L FF all the time.. i have no explanation for this, i changed nothing on the hardware between those flights.. this is the link to this flight 10 days earlier https://apps.savvyaviation.com/flights/5369129/735c1478-d9e6-42fd-af2b-aec50471d519

@carusoam here comes one example, i was flying LOP, the engine was running rough lower 35 l FF it was flyable, but you could fell something not going round like it should normaly with a fuel Flow of 35 L, in normal i could fly the Plane LOP with FF 32 Ltr and it was running smooth https://apps.savvyaviation.com/flights/5369132/cd3e3ae5-03fa-4016-b75c-fd0a48ae33bc

Thank you, do you believe #1 is already off, before #3 even reaches LoP while watching the video ? the edm shows a spread of 0 Ltr ff, when I push the peak and spread button and we did the gami test a few weeks ago and nearly all cyl peaked at the same ff, maybe 0,5 Ltr in difference…. i can work very close with our mechanic… I think will follow your description and clean all injectors first and then go down the list… maybe really one changed the inc…. I will check, thanks a lot !

@carusoam it was at 5.000 ft and the video shows how much LOP it was, the video shows the leaning process, thx for your many answers at all so far, guys… if I am too lean, I canˋt rich it up at all, without having nr #3 on the rich side again, see the video..- maybe I have to add 1-2 " MP before leaning on the LOP side ? Is it that, what you all mean ? IMG_2417.mov

Hello, flying our Main overhauled engine io360 in a 1980 m20j after 50 hrs lop again with gami. the delta in ff is nearly 0 in our edm between all 4 cyl, what we never had before is, that now running on the lean side, the egt begin jumping up and down and it feels something like not going round at all, it’s not a big thing but you feel something….it’s not happening when rop, either before overhaul the engine… anyone some ideas? Look at the video, thx 9AD5AFCA-2904-4462-A09A-4401BA8C6AA0.MOV