I'm using a Porter Cable finish nailer and about half the time it misfires. Sounds the same, dimples the wood, but no nail comes out. It's several years old and I've never done any sort of maintenance to it. I've got plenty of air pressure--at least 100 pounds.
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Re: air nailer won't nail
If youve never done anything to it could be a couple things. Have you kept it oiled (about 6-8 drops) before using and again at lunch if construction type work. Check the nails to make sure they move freely in the magazine Check the nail guage for proper size. and what I would do is fire it till it skips disconnect the air from tool and open the front door (for removing jams) and see the driver position. If it is partially down that would be the problem, check the driver for being bent. Lastly remove all nails and just tap the nose on a piece of wood and again check the driver position, if it moves or falls freely then the tool would have to have new rubber which might be a good idea anyway. Get back to me with the model number and I will research and see if they make an o ring kit.
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Normally I would say you aren't using enough air pressure because somewhere around 80psi (every tool is different) will not be enough to fully retract the driver. At 110 you are fine so that is not the case. I doubt it is broken because a broken driver will still retract unless it broke near the piston. My guess is it needs the o-rings replaced but you can pull the top head and pull the driver out first to make sure. Parts and breakdowns can be found here as DeWalt owns Porter Cable.
could be the wrong nails, could be a worn driver ( what hits the nails) could be a worn nose( what the nail comes out of) our local repair shop can check it out and repair the problem,,, pls rate ...tks
Check the magazine area near the head for a jammed nail or other feed obstruction. It sounds like the driver is hitting the wood ok. Did you change nails (brand, type, or size) when this occurred? Make sure the magazine feed spring is ok.
The dent in the wood is not caused by the air. It's caused by the set that drives the brad. Are you oiling it consistenly? Are the brads the right manufacturer for your porter cable brad nailer? From the information you give it appears that the brads are not advancing correctly or that the air pressure is not sufficient to dislodge the brad from the brad strip on the first strike - it takes an additional strike to break it free. The standard for adding oil is to add ten drops of air tool oil for every hour of operation. That seems like a lot, but the correct amount of oil is a sure way to prevent most air tool problems.
Sounds Like it's time for a Rebuild. On the Other Hand the tool may not have a Steady regulated pressure setting?? After further research I came up with a Contact Number for You for Porter-Cable for Service Centers 888-848-5175, I'm sure They can Help You Troubleshoot this Nailer more In-depth... IF, You can't get any satisfaction with the Service Center you come up with, get back in touch with me, and give me an Area of the Country your In, and perhaps I can get you to a Better solution. I reviewed your Model Parts Schematic and seen Several Parts that could be the Culprits. But at this Point I strongly feel That Porter-Cable Service Center would be Your BEST alternative. Good Luck!!
Could be a couple things, first are you using the right nails in the gun e.g. collation and degree. Second do the nails move freely in the magazine and how is the pusher spring on the nail does it have enough pressure. Then I would unplug from air remove all the nails andjust tap the nose on a piece of wood and does the driver drop? If so the piston Oring is worn and needs replaced, but if you do that I would recommend replacing all the rubber. Let me know and I would need the exact model number to come up with parts.