Framing Nailer

I have a lot of air tools and a brad nailer but I have never owned a framing nailer. I bought a used Paslode F350S online for home use. I drove eight nails and it worked fine. My concern is what may be an air leak. When air is connected to the gun it continuously vents air from the exaust port. Is this normal? If not what kind of money are we talking for repair? The gun was decribed as in good operational condition so I am willing to talk to the seller if need be.
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On Wed, 14 May 2008 16:38:53 -0700 (PDT), pamlico snipped-for-privacy@hotmail.com wrote:

No it's not normal. Most likely an O ring problem but could be more. Check online for a owners manual or something that will show you the parts and the list. Also check to see if you have a local Paslode dealer that can point you to a repair shop. If the repair is an O ring you might be able to replace it yourself or if not the cost would be minimal. OTOH if you have parts banging around in there it could be quite a bit more expensive to repair. We use mostly Senco and our sales guy repairs our stuff if needed when he delivers nails. An O ring replacement might cost us a few dollars but a broken piston (very rare) might cost more than the gun is worth, depending on the gun.
Mike O.
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This problem is usually caused by a bad cylinder sleeve seal, debris embedded in the cylinder sleeve seal, or a bad head valve (which presses against the cylinder sleeve seal). Air will leak past the seal and pass out through the exhaust port. Often it will slowly push the piston down if there are no nails in the magazine. Exhamine the sleeve seal carefully for damage. If it is in good shape, the problem is usually with the head valve assembly. Try pushing it in and out with your thumbs to see if it moves freely.

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Thnks for the input. I figured I'd share the results. There is a sealing ring under the exhaust vent. It turns out the ring had a bad spot in it.
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In article <1a19538d-f9ff-4eb5-aca7-addfb3fcfc56

I've a re-engineered (for fence wire staples) Hauboldt staple gun that sometimes does that after a partial misfire, it may have to do with the piston not fully retracting - on that gun disconnecting and reconnecting the air hose fixes the venting. Usually I also have to open the gun and pull a crumpled staple out at that point. No idea what it really is that causes this venting though.
As for framing nailers, I've both used Paslodes and Sencos and never had a problem like you describe. Sounds fishy to me.
-P.
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On Thu, 15 May 2008 23:57:53 +1200, Peter Huebner

Paslode framing repair kit I see one guy offering kits for $25. http://item.express.ebay.com/Home-Garden_Tools_Brad-Nail-Staple-Guns_PASLODE-5000-SERIES-PARTS-REPAIR-KIT-after-1996_W0QQitemZ130180640466QQihZ003QQptdnZBradQ2cQ20NailQ20Q26Q20StapleQ20GunsQQddnZHomeQ20Q26Q20GardenQQadnZToolsQQptdiZ1178QQddiZ984QQadiZ1238QQcmdZExpressItem
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