Hitachi air nailed air leak fix.

Air was blowing by the trigger. I put some rubber washers in to fix it but it didn’t work so I found the proper washer online and was able to seal the air so now it fires great. I recommend but it is not required to take apart the top if the cylinder head and clean it out and oil it up. I found a tiny stone in my cylinder head seal. Removing it prevents damage beyond repair. Comment if you have any questions.
Sorry I forgot to imbed a link. Here is an Amazon link for the part I got
Trigger Valve Assembly 875-638 SP-P2 Compatible with Hitachi NR83A / A2 / A2S Framing Nailers NV45AB2 Hitachi Replacement Parts nr83a2 Nail Gun Accessories www.amazon.com...

[@mariselamaceda5149]

I already changed everything but still getting a trigger leak

[@manuelsaravia777]

Where is the link ?

[@benreber2277]

The air leak is in the trigger. The gun would leak air right when air was plugged in and then it would shoot with low power but was still leaking a lot of air. The problem was an old seal that was broken behind the trigger. When the safety tip is pressed it slows air to pass and when the trigger is pressed it then fires. This is how it is able to bump fire or standard fire. My trigger seal being bad then slowed air to shoot out the trigger towards my finger not sealing and compromising pressure.