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Hello  Paul-

We got a free lesson in electromagnetics today.  After I  emailed yesterday,
we went to run the engine again & it ran  terrible!  Terry had diddled with
some of the computer settings, so we  thought perhaps we'd screwed something
up.  We reviewed the settings  & discoverered the EC2 tach setting was way
off -- 572 vs the  not-to-be-changed value of 515.  Terry fired up again &
all seemed  well.

Until... I noticed the EM2 reporting continually decreasing line  voltages...

I looked at the switch panel, and saw we had the  externally-regulated
alternator off-line.  I flicked it back online...  and... disaster.  Suddenly
the engine was trying desperately to stop  & could not be adjusted to run
smoothly.  Flicking the alternator  off resulted in fairly smooth running.
Every time the alternator was  brought on line, the engine went bananas.  As
soon as it went off  line, the engine became much smoother.

Here's a test for the  group:  Why is this happening?  Here's an old photo
which  pinpoints the problem for those with sharp eyes...

Mark (Rocky Mtn  High)




Alternator wires dressed with CAS wires.....................

Is that a Fram oil filter on an airplane? Is this a suicide attempt?

Get a K&N on there.

Lynn E. Hanover