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Outstanding video! This was what my DA250C needed! Thank you!

It appears the cam arm is loose. That may cause a bind and not allow the lock to mesh. The shoulder bolt is most likely bent as well.

Thanks for posting the video. I was able to fix my gun with your help!

this is bc the metal shaft in the center has 2 tiny o rings that most likely disintegrated with use. you can only see them or the grooves if you take that trigger assembly apart. instead of ordering that part, i ordered a whole assortment of orings and hopefully that will fix it as well. but great job on the video!

I bought the new trigger valve for my DA250 (same symptoms as you). However, after replacing the trigger valve, it still won't fire. No leaks other than a slight hiss when I press the trigger, but it's very faint; same sound as before/after the new trigger valve. Any ideas? I don't want to keep throwing money at this, guessing on a solution. Thanks!

That's how it's done son, F it up and fix it. GJ not editing out.

Hey Brain 3👍up. Thank you, my Gun was just out of warranty and did the same thing. Price has gone up for the part on Amazon $23 now. Easy replacement and works great. Thanks Again!!!!

Hi Brian, my porter cable nail gun was working and there were no air leak! The trigger was doing the same thing that your video showed. I watched your video and took you advice. Order one from Amazon! Works great! Thanks for the video and advice!!

Worked for me! Thanks for the video

Mine doesn't leak either. But a specialist told me it wasn't the trigger valve.

Mine only shoots air when the safety is compressed down do you think this will work for that?

THANK YOU! This is what happened to my Banks 18g Brad nailer. Now I just have to find that valve for it.

god bless you and your family! this is exactly what mine was doing

Thanks! Replacing the valve assembly fixed my nailer.

Worth the money.

Worked like a winner thanks Brian!

Nice job. Ya have to laugh that we need a hammer to fix a nail gun. Ok, to the shop to give this a try. thank you.

It's because inside the trigger "valve" assembly there is a rod where the replacement part has two O-rings around it, but the original one just had some crappy grease/glue sealing instead that falls apart over time. Planned obsolescence caught red handed lol. All you had to do was pull the old trigger valve thingy apart with very light force and you would see.

This video needs to have a trigger warning. I'm so triggered

Thanks for the video. This worked great.

I have a DA250C the part number is 647620-00. I hope this makes ordering easier. Thanks for this video.

I have seen that all of the porter cable models staple/nail guns have been the triggers, look there first.

I have a Central Pneumatic roofing nail gun, 93253. I watched the clip and took it apart. There are two green bumper parts that deteriorated. One is a dampener at the very back, the other is a external dampener on the outside of the piston cylinder. I can not find a place to buy replacement parts. Major spare part suppliers do not list Central Pneumatic, neither Harbor Freight. Any idea? I believe that this brand uses parts that are designed for another brand. 2022-11-22

You saved me. I thought I broke my brother's gun, and would have to replace it. Thx

I have the same nailer and the same problem. I actually took the trigger valve apart and found there is a little plastic o ring that has destroyed. It looked fine just like yours but once taken apart the problem was obvious. New trigger assembly solved the problem.

thanks - great learning vid. my air gun shots a double nails would that be a trigger problem?

Perfect! 5 minute repair and I'm back in business. found replacement trigger assy on Amazon.

Watched the video. Ordered the replacement trigger valve from Amazon. Watched video again with new part in my hand. 5 minutes to replace and test. Works great! Thanks.

😩😆😆👏🏽 When he got it working 🤣🤣🤣👏🏽👏🏽 HE WENT IT WITH THE Nailing!!!!!💗💗💗💗🥳🥳💪🏽👑

Just wanted to say thank you to Mr. Kanoy - thanks to this video, I was able to repair my gun in about 5 minutes and for about $18. Three pins - two holding the valve, one the trigger, popped it out easily, put the new one in from Amazon, put the trigger back and three pins back in and done. And I'm not the most handy fella -- I had to buy a punch set even (suggested on Amazon with the valve even!), but that is a good investment anyway.

As soon as you added the beer as a necessity to complete this project, I subscribed!

Thanks for this video. Like you I was having the trigger leak, not the piston leak problem and was kind of flabbergasted as to how to fix it. Watching you do this gave me the confidence to order the part from Amazon. 15 mins later, and I have a finish nailer that works like new. My only difference is that when you put the new assembly back in (around 6:40ish) it popped in pretty easily. I needed to use both thumbs and press it back in harder than it looks like you did, until it clicked. Otherwise, I was back in business in no time. You are an internet hero.

Great ... I have the same problem and shall order the part... Thank you and best wishes.

Great job! Placed an order for a replacement right away. Your comic relief was appreciated too 🤣

my porter cable trim nailer keeps shooting out multiple nails with every trigger pull, one nail in the work piece (often not fully) one on the floor and one jammed in the gun,,, the gun isn't leaking... any idea what the heck is wrong???..... thanks, Rob

Thanks. Great video!

Thanks for the help! I ordered the part from Amazon less than 24 hours ago and my nail gun is working like a charm!!! I did lose the little ring that holds the trigger pin in... I could rig something, but think the nailer deserves a new one!! Thanks again... now for that beer...

didn't see you clean the bore hole for the trigger valve could have been dirty .

Nailed It thank you BK, your 9 minute video made my repair much simpler and merely 4 min long

You have got a like

Good sarcasm,

Have you ever figured out solution to this problem? I'm having same issue.

You can get an assortment of orings from anywhere for 10bucks and fix any nail gun for years

Great job!! Thanks for sharing. I’d bought the finish nailer years ago and just got to use it. Worked fine for a dozen nails and the I decided I needed shorter nails. Off to Home D. Got another 5-10 nails in and happy camper I was. The next trigger pull nothing. WTH??!! Checked for a jam. Clear. Pulled up you video. I guess this is the problem. When I pull trigger I hear a hiss from back end. Will order the part and punch set on Amazon. Fortunately I have the beer!!

Thank you. I appreciate your help and your video. love Porter Cable.

Great video, thanks for posting! I’m having the exact problem with my PC nailer. Brought it to a repair shop who estimated $90. and three weeks to fix. It was then that I decided to check UA-cam. Should’ve come here first! 🍻

A SQUART OF 3in1 oil often before the hose????

o rings are usually the culprit no oil

my directions said put oil in before conn hose if no oil over time it freezes up i have an off brand bought tool sale many years ago 16 ga just now failed its time for a new one anyway