Question about Senco 2D0001N FinishPro2N1, 18 Gauge Brad Nailer/Stapler, Sequential

1 Answer

Air rush when trigger pulled, will not fire - Senco 2D0001N FinishPro2N1, 18 Gauge Brad Nailer/Stapler, Sequential

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  • tap2004tap Jul 17, 2009

    it was a senco brad gun. i solved the problem by lowering the pressure from 120 to 75psi. thank you

  • David Ford
    David Ford May 11, 2010

    what is the brand and model number and I will try and help

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  • Master
  • 2,176 Answers

Asker solved own problem

Posted on Jul 26, 2009

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1 Answer

Bostitch just blows air when trigger is pulled


Air leaking from trigger when attempting to fire the gun is normal and should cause nailer to fire, however if the trigger pin is not depressed all the way in,the gun may not respond. Easy test. Remove the nails and remove the trigger. Connect the gun to air and quickly depress the valve pin all the way in with finger. If the gun fires, adjust the safety foot so that the trigger pin is depressed all the way in. If the gun still does not fire, then remove the head cap and pull out the headvalve. Apply plenty of white grease to orings and retest. If the gun fires, then replace the headvalve orings. When the headvalve orings are worn, air will leak from bulkhead chamber to the headvalve chamber causing the gun to not respond to the trigger. The addition of grease to worn orings will make them temporarily seal. Good luck

Jun 16, 2016 | Stanley Bostitch N66c1 114"to 212" Coil...

1 Answer

With 90 # air and PC nails. When I pull the trigger nothing happens. No air noise, no nailing, no movement - just dead. It's been oiled every use.


Most likely stuck trigger valve. Easy to check. Remove nails, remove trigger to expose the firing pin of trigger valve. Connect air and very quickly depress the firing pin all the way in. If the gun fires , adjust the safety to depress the trigger valve completely. If the gun does not fire, replace firing valve, or remove and check /lube o-rings in valve. Good luck

Jul 11, 2015 | Air Tools & Compressors

1 Answer

Dewalt D51238 not firing when trigger pulled but air does come out?


Remove the head and lube the headvalve with white grease. If gun still does not fire and makes air noise at the trigger valve then orings within the trigger valve are worn. Replace the trigger valve or if you have a source for small orings, just replace the two orings on the metal stem (2mm x 1.5mm). Dewalt uses vinyl orings on the stem that fail. Replace with buna. Good luck

Oct 13, 2014 | Air Tools & Compressors

1 Answer

Porter cable rn175 type 1 roofing nailer. Unit shoots once by itself when first plugged into hose. After that initial shot, gun works perfectly. Unit has been fully rebuilt including trigger valve and...


I have seen this on dewalt and p/c guns. Usually caused by trigger valve but you mention that trigger valve is new. If the headvalve does not seat correctly on the top of the cylinder, the in-rush of air will leak past cylinder seal and push down the piston (feels like you fired the gun ) . Difficult to pin down the problem but could be headvalve is sticking slightly open. I would suspect headvalve orings too tight or spring in head is weak or cylinder in head is worn. Easy to check. Remove the head and push in the headvalve with thumbs. The valve should be stiff to depress but return freely. Check that the cylinder in the head where the outer headvalve oring makes contact is not scratched or worn. If scratched, sand with fine sandpaper till smooth. If worn and depressed, replace head. If spring feels weak, stretch it a bit pulling it apart. Lube cylinder /orings with white grease. Untill you find the problem, do not load nails untill after airline is connected. On the dewalt guns, firing when air is connected is due to the trigger firing pin orings worn. You could check this on your gun by spraying soapy water on the trigger valve under the trigger then connect the airline. If air is blowing out the trigger when you connect air, most likely faulty valve. Good luck and let me know what you find out on the unusual problem.

Nov 01, 2013 | Tools & Hardware - Others

1 Answer

My new porter cable RN175B nail gun won't discharge a nail


If the trigger is set to single fire, you will need to place the gun against the work then pull trigger as you have done. Try setting the trigger to bump fire and try again. If hear a thump inside the gun, remove the head and check that the head valve in not stuck from lack of lubrication. Easy test, remove the nails, remove trigger pin, remove trigger and manually push trigger firing valve. If the gun fires then suspect faulty trigger or safety arm not lifting enought to activate the trigger valve. Good luck

Nov 21, 2012 | Air Tools & Compressors

1 Answer

Gun is full of nails, but acts like it is empty (the plunger won't advance). You go to tap it with the trigger pulled, and it just does nothing. Seems like firing pin is not getting air or somet


If no air is leaking from the gun, take out the nails, remove trigger by removing 3mm hex head bolt to expose the trigger pin. With air connected and side door open so that you can see the feeder, quickly depress the trigger pin with finger. Gun should fire. If gun does not fire (only makes air sound at trigger) dissconnect airline, remove head and lube headvalve with white grease and reinstall. Test again. If ok replace trigger. If still no joy, replace trigger valve with new factory or generic (part # TVA6). If gun fires but does not activate the feeder claw, remove two 6mm hex bolts from front of gun and split apart upper and lower body and check white oring (part # 149885) Good luck

Oct 16, 2012 | Stanley Bostitch Rn461 Gun Coil Roofing...

1 Answer

Air rushes out of trigger area as soon as air hose is connected.


Remove the trigger to expose the trigger valve then un-screw the valve. If you have access to orings, pull apart the valve and replace orings (5 orings in the valve and one external oring ((external oring usually ok)). If you would like to replace the valve complete, the part number is ( PB205ba1) and is available at www.toolpartsdirect.com. Good luck with the repair.

Sep 18, 2011 | Stanley Bostitch SB1664FN 16 Gauge...

1 Answer

I pull the trigger and get a rush of air but no nail shot. It has been working fine for the last several days. I've got it running on between 75 and 80 psi.


Place two drops of light oil into the gun at the air inlet, and re-connect the hose. Fire your gun several times into scrap wood.

Best regards, --W/D--

May 31, 2011 | Hitachi NR83AA3 3 1/4" Clipped Head...

1 Answer

Paslode nail guns won't shoot


piston is probably jammed

This happens sometimes try holding it up against a board with the trigger depressed and then inset the battery.

The goal is to try to force the firing sequence to get the piston back to the right position with corded units this is simply done by attaching the air hose with the trigger pulled this causes air to rush into the gun chamber pushing the piston back and firing a nail out.

The cause of this is a misfire or jammed nail that stopped the piston in the wrong location so air will not build in the chamber correctly.

Hope that helps

Feb 18, 2010 | RTO Paslode 902000 IM250 Ii Cordless 16...

1 Answer

Jammed makita an923 nail gun


On most all nailguns when the trigger is activated air pressure is released from the headvalve causing the headvalve to open and fire the piston. If air leaks through the headvalve orings or through the headgasket port to headvalve, it will not fire. Try applying light grease to headvalve orings and make sure that headgasket is sealing around vent hole. If it fires then replace orings in headvalve for long term repair. Secondary problem is worn safety parts and trigger or trigger pin. If these parts are worn the trigger will not push the trigger valve pin all the way in when you bump fire the gun. With air supply disconnected, apply pressure to safety while depressing the trigger and check thet the pin is moving all the way into the trigger valve. Adjust or replace as necessary. Enjoy

Sep 13, 2008 | Air Tools & Compressors

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