Restoring
the Mono=92s undercarriage involved removing and replacing the engine. Subs
equent
flight checks were excellent=2C and I was really pleased with the job.
The very
next flight was a different story. High power settings produced a disturbin
g engine
flutter and a loss of some power. Ground checks confirmed the fact=2C and a
variety of attempts were made to solve the problem. All without success! If
anyone else has experienced the same and has the answer please let me know.
The symptoms=3B
1. Engine starts and ticks over very nicely. Mag.
checks OK.
2. Fuel pressure is good.
3. 2500 rpm. Smooth running. No
noticeable difference on mag. checks.
4. 4000 rpm. Fluttering becomes
apparent. More pronounced on one mag.
5. 5000 rpm. Fluttering is obvious.
Again more pronounce on one mag.
Checks so
far=3B
1. All spark plugs replaced.
2. All wiring and leads checked.
3. Valve covers off=2C and valves=2C
seating=2C collars etc. Checked.
4. Connections to engine management
switched. Mag. symptoms switched with it.5. Carb settings checked for ful
l opening and closing.
There is a possibility
that the ignition is not advancing. Is there a simple way to define that?
Thanks in anticipation.
Bryan
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