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Mysteriously sticking manifold pressure gauges

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pjander

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Apr 13, 2010
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Greetings:

I have an Apache PA-23/150 with a strange problem. After 30-50 hours of operation, the manifold pressure gauge starts sticking. At first I thought it was just an old gauge, but now I'm on the third one, and see this is a pattern. There does appear to be liquid that works it's way into the gauge, although I can't figure out how it would get there.

I blew out the line each time. The line does loop up and then down to form a "trap" which I presume keeps any liquid in the manifold itself.

As anyone ever seen anything like this? If so, what was the remedy?

Thanks,

_Paul

Paul J. Anderson
Lake Elmo, MN
[email protected]
 

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