My dad gave me an older 16 ga Porter Cable air nailer and a cheapie Harbor Freight 100 psi air compressor. I used these two together for various projects around the house & all was well. The compressor stopped holding air, so my dad gave me a second, brand-new compressor - same brand & psi range. I started using that with the old nail gun and after a while (guessing 100 nails or less) it stopped driving nails. It punches the wood, but no nail comes out. It isn't jammed, but beyond checking that, I don't know what to do. Now, my dad also gave me a brand new Blue Hawk 18 ga nailer. I used that on my project and the first strip and 1/2 of nails went fine. Halfway through the second strip, I have the exact same problem as with the other - it punches the wood but no nail ejects at all. The compressor is showing that it is at a high enough psi. What could be happening to cause the same problem in two different nail guns this way?

Tools & Hardware - Others - Porter Cable