Engines-List Digest Archive
Mon 05/21/07 |
Total Messages Posted: 1 |
Today's Message Index:
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1. 04:04 PM - Sniffle valve (Fiveonepw@aol.com)
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Time: 04:04:28 PM PST US
From: Fiveonepw@aol.com
Subject: Sniffle valve
I am installing a Lycoming sniffle valve (included in Vans FWF kit) to an
Aerosport IO-360 and would like to confirm its inteded operation. I "think" it
is basically a check valve that should open when manifold pressure is equal to
atmospheric (engine not running) to drain any fuel pooled in the sump. Engine
running, it should close when manifold pressure drops. The valve I have
flows freely when blowing into the sump side, but still passes a bit of air when
blown into from the tube side, which I surmise would constitute a small vacuum
leak and possible leaner than normal operation.
Is this normal?
Thanks-
Mark
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