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My piston pilots but no air comes out of barrel

Post questions and info about pneumatic (compressed gas) powered cannons here. This includes discussion about valves, pipe types, compressors, alternate gas setups, and anything else relevant.
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Unread postAuthor: iisthemuffin » Tue Jul 22, 2008 12:18 am

So in your educated opinion, putting a better pilot on should fix my problem?
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Unread postAuthor: MrCrowley » Tue Jul 22, 2008 12:19 am

It's the first thing i'd try but it could be the piston. I ended up replacing the piston and pilot valve in my first piston gun to get it woring 100%.
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Unread postAuthor: iisthemuffin » Tue Jul 22, 2008 12:21 am

I had assumed the marker would work well but it didnt work. This piston is VERY tight but i can move it. Its not the best choice seeing as how it is not completely square and the little hole in the side could cause a problem. It works for now though.
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Unread postAuthor: frankrede » Tue Jul 22, 2008 1:07 am

Try to spray some lithium grease or similar lube in your piston housing.
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Unread postAuthor: iisthemuffin » Tue Jul 22, 2008 1:14 am

Ive greased my piston in vaseline several times. I believe Crowley is right about the pilot valve.
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