Just completed my fourth 200hr service including replacing all o-rings in my carbs. Engine ran fine for first 45 minutes then started to lose power and run very rough over 4000rpm but fine under 4000rpm. On a full power static runup on the ground it will generate 5300rpm for a few seconds then surge and falter between 4200rpm and 5300rpm. Any ideas what might be wrong? Thanks!
Roger Lee
LSRM-A & Rotax Instructor & Rotax IRC
Tucson, AZ Ryan Airfield (KRYN)
520-349-7056 Cell
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