I have an issue all of the sudden with my 13B Turbo not wanting to start.
It will fire occasionally, but just won't start running.
If I am persistent enough (and have enough battery), It will finally start,
but does not run well. Seems to have a miss in it.  It runs better if I turn
the mixture to lean, in fact, I can turn the mixture all the way counter
clock wise.  I think that it used to die when I would do that.  When I
switch to controller B, it runs better for a few seconds, and then goes back
to missing.  It doesn't start any easier on controller B either.

I haven't done a lot of troubleshooting on it yet, but wondered if anyone
has had a similar issue. I did replace the spark plugs, but that didn't seem
to help any.  I still have the stock turbo on it, so, maybe the turbo is
starting to go.  It also started this problem, after I fixed a problem with
the starter.  My Cessna ignition switch got some water in it and it got to
where it wouldn't engage the starter.  I took it apart, and cleaned all of
the contacts to fix it.  I have that switch also wired to do the coil test
when you select mag1 or mag2 on the switch.  The coil test only works on
controller B though, so I don't think that would affect controller A.

I guess that maybe my next step is to verify that I'm getting spark on all
plugs, and then maybe try removing the plumbing to the throttle body, and
try starting it then.  That should verify if my turbo is failing, and
restricting air flow.  

Steve Brooks
Cozy MKIV 13B Turbo