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You can tell if it is the exhaust by placing a hand over the
exhaust pipe end. It should change the tone or stop the noise.
You can remove the valve cover and "spike the valves"
(hit them with a rubber hammer) as it may just be
a bit of crude that will bust loose.
Also run the engine and recheck when warm.
If it comes back, it may be worth a check
with a boroscope before declaring alls well.
Mike Busch ? has written many articles in the various
aviation press about clyinders, condition inspection etc.
40/80 is a small leak. I have flown engines that
worked great, gone in for annual and had compressions
or 0/80
A TSIO may be an issue, on my Cessna a clyinder
change is a couple of hours and $300 to rebuilt the
same jug with all new valves etc.
David Lowry
----- Original Message ----- From: "Skip Long" <skiplong@videocomm.com>
To: <lml@lancaironline.net>
Sent: Sunday, August 05, 2007 5:10 PM
Subject: [LML] TSIO-550-E comprssion
During this years conditional inspection cylinder #5's compression
was found to be 40/80. All the other cylinders are in the mid 70's.
You can hear air escaping past what I believe to be the
exhaust port. Engine has less then 100 hour since new.
Any words of wisdom before I remove the cylinder.
Thanks
Skip
Skip Long
N47SL, LNC4, HWD
(650) 578-9167
FAX 578-9153
mailto:skiplong@videocomm.com
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