KALEWIS
Well Known Member
Good Morning VAF land -
Will post on rotaxowner.com as well, but thought there may be some ideas from the braintrust here too.
After normal mx, our 912uls (approx 700 hrs) is running extremely rough. So rough that a carb sync is not possible. Local AP IA is assisting, not a rotax guru, but is familiar with them. He thinks a carb is not functioning.
Here is a summary -
-Gearbox overhaul by Lockwood - all ok and re-installed on a/c
-Both carbs had the "5 year" overhaul by Lockwood
-New air filters
-New spark plugs, gapped properly
-Replaced a carb drip tray
-New engine mount isolators
-Throttle cables reinstalled on carbs per KAI (never removed from carb mounting bracket)
-Did not change oil, so no need for oil purge
-Floats weighed within spec (each around 6g per set)
Engine was running fine when last run (about a month ago before the condition inspection)
Pulled plugs and all look to have been firing
Fuel is getting to both carbs equally
As rough as it was running, no fuel overflowed into the overflow tubes or drip trays
More troubleshooting to commence -
Will post on rotaxowner.com as well, but thought there may be some ideas from the braintrust here too.
After normal mx, our 912uls (approx 700 hrs) is running extremely rough. So rough that a carb sync is not possible. Local AP IA is assisting, not a rotax guru, but is familiar with them. He thinks a carb is not functioning.
Here is a summary -
-Gearbox overhaul by Lockwood - all ok and re-installed on a/c
-Both carbs had the "5 year" overhaul by Lockwood
-New air filters
-New spark plugs, gapped properly
-Replaced a carb drip tray
-New engine mount isolators
-Throttle cables reinstalled on carbs per KAI (never removed from carb mounting bracket)
-Did not change oil, so no need for oil purge
-Floats weighed within spec (each around 6g per set)
Engine was running fine when last run (about a month ago before the condition inspection)
Pulled plugs and all look to have been firing
Fuel is getting to both carbs equally
As rough as it was running, no fuel overflowed into the overflow tubes or drip trays
More troubleshooting to commence -