"Stealth Pilot" wrote in message
...

I'm with you Bob.
I once thought I'd throttle back and poke under some mist and pop out
the other side and resume. when the power came off the revs started
dropping and dropping and dropping. I bunged on full carb heat and
then full throttle and still the revs kept dropping. out the corner of
the eye I noticed a shaft of sunlight and turned toward the hole in
the mist. about 2 seconds into the sunlight and I had full power back
again. when it happens it happens quickly.

now back to the op's description of a rev drop on opening the
throttle.
my bet is that the carb has been in service for quite a while and the
leather bucket seal on the accelerator pump is knackered. it isnt
giving the full squirt of fuel on acceleration. the other possibility
is that the little jet pipe has moved out of the centre venturi
position and the squirt isnt making it up into the inlet tubing.
far better me thinks that he doesnt wank on creating new procedures
and gets the a&p's to check the carby functioning.

Stealth Pilot

Very interesting points, which I plan to keep in mind when I return to
flying.

The only thing that I can add is that the results might be more reliable if
the A&P is experienced in servicing carburetors--and possibly magnetoes as
well.

Peter
(Having seen some poor work from folks who should have known better)