Paul,

I removed the turbo 13b from the Glass Goose and replaced it with a 2005
Renesis.  I was running the engine during fuel mixture adjustments when it
suddenly started to run rough.  The manifold pressure jumped to about 20" at
idle, naturally the mixture became too rich because the engine controller
was reading the 20" manifold pressure.  Just before that, the manifold
pressure at idle was between 11" and 12".

I cannot find the source of this problem.  I removed the intake manifold to
check for leaks, the gasket was ok, I replaced it, reinstalled the manifold,
same problem.  The lowest manifold pressure I can get at idle is between 18"
and 20".  There is a leak somewhere but where?  Or is there another reason
that I am not aware of?

Rino Lacombe
Now, Renesis powered Glass Goose

I did fly about 10 hours last spring (in June) with the turbo 13b.


I have no idea. Can you take a picture of the manifold you are using?
Is the turbo still OK?

Perhaps you have a leak in the hose going to the manifold pressure
gage. Get one of these hand pumps from the auto parts store and check
it out. It is a real handy thing to have around.

Paul Lamar ...No rotor no motor.

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