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My bostitch nail gun is losing air somewhere. It makes a loud hissing noise when you plug it up to the air compressor and the air seems to be coming out around the trigger.
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compressor not compressing air --- problem reed valves or poppet valves in the compressor head
blocked supply tap to air line
air line not properly connected
check compressor tank air pressure gauge
Check the pressure at the gun to make sure the hose is good. Make sure the gun is oiled. The compressed air forces a piston down to drive the nail. the inside of the cylinder may be corroded causing the piston not to move as fast as it should or with as much force. Most air guns are pretty easy to disassemble to inspect. You should be able to figure this out pretty quickly this way.
At the end where you attach the air hose is the nailer imprinted with the words "add oil"? If so; add a few drops of oil designed for air nailers.
Also check to make sure no nails are stuck in the tip of the nailer and the return mechanism is reset.
Your nailer model number is N75C-1 shares design features with many other bostitch coil nail guns. Usually, when you only hear a puff of air coming from the trigger area or within gun, the driver or headvalve is stuck. Usually easy to fix. First check the driver by removing air supply and inserting metal rod into nose of gun pushing the driver all the way up to top of cylinder (open latch and note position of driver, should not be visible). If driver is stuck due to debris, clear and retest gun. If driver is all the way up then remove head and see if the driver moves down (should move with light pressure). Headvalve should move inward with strong thumb pressure and move back out. Repair as needed and lube with silicone paste lube (sold at Lowes in plumbing department and swimming pool supplies). If both driver and headvalve look ok, then suspect trigger valve under the trigger. Good luck
Check the position of the switches and selectors. It sounds like you are in between settings. Also, put in a few drops of oil, and try your gun out on scrap wood, so oil doesn't come out on your good work.
Eighter one of these will work good for nail guns personaly i have the porter cable and i like it i do a lot of construction work. And i think the porter cable comes a finish nail gun for small nails and staples mind did. But there not for running tools that require a large volume of air like air sanders air rachats or air cutters.
Not sure exactly what Bostitch framer model you have, but if it is powered by compressed air, as long as you remove the air hose from the nail gun, there should be no risk of the nail gun firing while you remove the jammed nail. There should be a way to access the driver area from the top of the nail gun, even via a latch or a couple screws. Remove the top part of the driver area and that should give you access to the jammed nail, which you can remove. Use long nose pliers or something similar if the nails are really stuck.
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