Since you are flying on B controller, hit the coil test switch (lead then
trail). If no sag on one or the other, you may have a bad coil or
plug.
Speaking of SAG, I had a strange
experience during today's flight which might be the opposite of SAG.
Everything seemed normal. I was boosting about 38 MAP
at 4500 rpm and 5000'. I was gently adding a little throttle to increase speed
for another ASI calibration when I felt a surge of acceleration way beyond
what I'd expect for the minor throttle adjustment I'd made. This
was literally a shove in the back.
It lasted maybe 2 seconds, then the engine carried on at the new power
level. RPM jumped up a couple of hundred.
I glanced down at the MAP. It had dropped to 34. My best guess is that
I'd been running with a gummed up plug which suddenly cleared and gave me
added power.
I'd appreciate any opinions on
this.
Now
if I could just make it happen again - and again.....
John
(getting relaxed enough to test the
airframe)