Porter-Cable FN250C not firing

[bmich]

I have a Porter-Cable FN250C although that might not be the correct model number.  Its the exact same gun, just about 10 years old.  Recently it stopped firing nails.  I would pull the trigger and press down and nothing will happen.  Does anyone have any suggestions on what to do to fix this. I was trying to shoot 2 1/2 16AWG finish nails, if that matters.

[Stwood_]

Dry or broken internal o-ring, driver bump pad inside is crushed, or dry/broken driver.

Release the front jam removal cover and push the driver up into the gun *if* it is hanging down. Lube it with some oil. It may just be dry and bound up.

[Flat Lander]

If you have air coming from exhaust on top, your bumper stop has disintegrated, remove the top cap and be careful to note the orientation of the parts for reassembly.

I got my parts from here https://www.ereplacementparts.com/porter...16563.html

[bmich]

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Thanks everyone, Ill look at it this weekend.

[tomsteve]

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Thanks everyone, Ill look at it this weekend.

make sure ya dont have a nail jammed first. mine will lock up occasionally ifnit needs oil

[bmich]

make sure ya dont have a nail jammed first. mine will lock up occasionally ifnit needs oil

Maybe I should add that I was using it for a while while it was working, then it started to misfire and then completely stopped. I was installing some baseboards and wham, just stopped.

[bmich]

Update, I took apart everything and I could not see any missing O rings. Nothing looks bad, however, when I press down and pull the trigger I get air leaking from the trigger area. Does that mean the trigger assembly is bad? I took that apart and didnt see anything that obviously looked bad.

[Stwood_]

O-rings seldom disappear. Worn o-rings leak. And you may not be able to tell if it is worn.
Scroll to the bottom part.... questions.

https://www.ereplacementparts.com/porter...16563.html

[bmich]

Thanks all, I purchased the o ring kit, the replacement parts store says my order will leave the warehouse in 12-18 days. Ill update then.

[Cabinet Monkey]

Thanks all, I purchased the o ring kit, the replacement parts store says my order will leave the warehouse in 12-18 days.  Ill update then.

Replacements say they have 25 on hand.   

Might want to reevaluate part source.