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Ok, I just did a leak down test and I can hear/feel air out the exhaust. Should the air pressure alone be enough to force it closed? If this is the case how can a leak down test be used accurately if it forces the valves shut? This is my first experience with a leak down test. Just trying to understand. Is there a chance something else is holding the valve open slightly? I'm holding out hope that the spring is broke and something is physically holding it open slightly.
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