Question about Porter Cable Coil Roofing Nailer

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My Porter Cable Roofing nailer will not feed nails? What could it be?

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Posted on Jan 02, 2017

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SOURCE: porter cable roofing gun

The problem that you describe could be caused by three things. First remove the cylinder and look for a black rubber band around the cylinder about med section. There is an indention with holes where it is supposed to be. The band should fit snuggly so that it does not slip off during use. Secondly, check that the piston oring/plastic ring holds the piston in the cylinder without just dropping under its own weight. Third, the upper bumper could have a crack or missing piece. Remove it and check. (vinyl part in headvalve) Parts are available at dewalt repair center or enjoy

Posted on Dec 07, 2008

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SOURCE: 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.

Posted on Jan 21, 2009

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I have seen this problem on several brands of nailers. The solution in most cases was to make sure headvalve orings are sealing correctly. Here is a simple test. Remove the head and place on workbench with gasket surface facing up. Push headvalve all the way in with your thumbs then cover the vent hole with finger and release thumb pressure to headvalve. Vacuum should keep headvalve down untill you release finger at vent-hole. If vacuum does not hold, remove headvalve and examine surfaces for fine scratches and/ or make sure of correct size orings (headvalve should be very snug). Remove scratches with extra fine paper (300-400 grit). If headvalve holds, remove headvalve piston and piston stop. With headvalve spring removed, push piston stop into headvalve and make sure that the piston stop fits snuggly into piston. Also make sure piston stop is not damaged or cracked. A loose fitting piston stop will cause multi-fire. Replace as necessary. Upon re-assembly, lube all rubber parts with plenty of silicone lube (not oil, wipe clean all parts before lubing). Silicone paste/grease is sold at Lowes in the plumbing department (Danco Brand). Good luck and email if you have other questions about this gun.

Posted on Jun 16, 2009

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SOURCE: I have a FN250B Porter Cable finishing nailer. The

i take it you also adjusted the air pressure. is whatever you're nailing into harder than normal?

Posted on Aug 01, 2009

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SOURCE: looking to buy a manual for a porter cable nail

Go to and type in your model number the manual is 13 pages long. If I have helped you with your request would you please rate this response accordingly. Thank you

Posted on Oct 10, 2009

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I have a porter cable roofing nailer model # RN175 that does not advance the nails everytime what causes this?

Some causes, in order of probability:
Roofing nailers get a lot of tar build up on them, especially around the nose safety and nail feed pawl area. Cleaning off this buildup will usually take care of most problems with roofing nailers.
On the side of the gun away from the side you load the nails on there is a small cylinder with a piston inside that attaches to the feeder pawl. If air isn't getting to the piston or the piston's o-ring or spring is damaged, it won't cycle properly to advance the nails.
If the driver doesn't retract fully, the next nail won't be able to advance properly for the next shot. This can be caused by o-rings in the head that are worn or out of their proper place.

Oct 06, 2012 | Air Tools & Compressors

1 Answer


I have noticed that some if not all brands are now using metal wire instead of copper to make coils. Metal wire is stiffer and does not bent down out of the path of the driver. If you are using coils welded together with metal wire (some wire looks copper collored, however when tested with magnet is found to be metal), and after firing a few nails, open side door and check if the leading wire is not bending down. Leading wire will not allow the nail the fully move into the path of the driver. Stiff wire will also cause the next nail in line to pull down slightly. When nail is pulled down slightly, it will be out of the path of the driver. The driver will hit the edge of the nail and cause it to flip. The nails can also flip if the feeder is not pushing the nails fully forward due to low pressure or weak spring or springs (some nailers have a spring pushing feed piston others use air). Finally, the feed piston or the body of the nailer where the feed piston is housed could be worn. With feed piston in forward position (normal) and the feeder claw removed, apply outword pressure to feeder with thumb checking for loose fit. The feeder shaft should not be loose nor move from side to side with thumb pressure. If shaft is loose then most likey lower body of gun worn with no repair. Good luck with you nailer.

Sep 16, 2012 | Porter Cable Coil Roofing Nailer

1 Answer

Using a Porter Cable RN175A and it stopped working.

for technical service (888) 848-5175

866-375-6287 their number

Sep 06, 2012 | Porter Cable RN175 Roofing Coil Nailer

1 Answer

When firing nailer first nail shoots good but next nails head will get stuck between the push rod chamber. push doesnt seem to return fully top when nail is cycled.

Try oiling the tool first. Remove the nails, squirt a decent amount of air tool oil in the stem where the air hose coupler connects, and fire the tool a dozen times or so. Then put in the nails and test. If it still hangs up then it will need the o-rings replaced.

Jun 11, 2011 | Porter Cable Coil Roofing Nailer

1 Answer

My RN 175 roofing nailer (porter cable) fires like a machine gun. I cleaned the trigger valve assembly and replaced the o-ring at top of the asembly. Still fires in high repetition.

With most nailers there is a safety device that has to be depressed as you press the gun against the work that is being nailed. This safety device might be damaged or jammed in the firing position allowing the gun to act like an automatic.

Mar 14, 2011 | Porter Cable RN175 Roofing Coil Nailer

1 Answer

Feed issues

This is usually caused by a dirty nailer. If you don't have the instructions on how to clean it you can download them from Porter Cable.

Jun 11, 2010 | Porter Cable 23GA Pin Nailer Kit

1 Answer

Cooil nailer will drive one nail but piston will not return

it sounds like it needs a thorough cleaning to remove the asphalt and new o ring kit installed. The o rings are probably dry or worn and won't retract the piston, also look at the feed piston to make sure spring isn't broken, but I would clean and rebuild, its not that hard if you are handy with tools.

Nov 07, 2009 | Porter Cable RN175 Roofing Coil Nailer

3 Answers

My bostitch rn46 seems to double or triple shoot nails frequently. Am I not using the tool properly or could there be a mechanical problem with the tool?

if u are right nails for gun,then make sure when u put coil in and feed in front of firing pin the nails are straight with pin and connecting wires are not bent causing nails to fall out of alingnment.

Oct 02, 2009 | Stanley Factory Reconditioned Bostitch...

1 Answer

My slide hammer on my roofing nailer won't return. It will lay one nail and stick. This nailer is my life line. I need help!

hopefuly it just needs some oil, but if mechanism is worn out from lots of regular use( like if you are a pro roofer) you will need to replace parts. but check for excess play, metall burrs, dirt and make sure its oiled.

Aug 26, 2009 | Porter Cable Cable RN175AR Reconditioned...

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