The nails will not drive into the oak flooring! the compressor is at 100psi and the nail gun mis fires or when it does fire it only drives the nail 1/4 inch into the flooring. It is a Akuzuki x-799

A good nail gun will regulate the pressure.

Usually, the driver extends past the nose of the gun about 1/4 inch. Easy test. Remove nails and dry fire the gun into very soft wood to make sure that the driver is not missing the tip. If good indention is made into the wood then suspect worn piston oring. Easy test for worn piston oring. With nails removed, point the nose of the gun up then down again. If the driver moves within the cylinder, replace piston oring. This gun needs about 90 to 100psi. If too much hose is used, pressure will drop. Check pressure at the hose by making a tester using a male quick fitting installed on a pressure gauge. Good luck

If no air is leaking from gun, miss-fire is usually caused by worn or too tight piston oring or lack of lubrication. Easy test. Disconnect airline, remove nails, point nose of gun up then down. Driver should stay in uppermost position. If driver moves up then down within gun replace piston oring and retest. Set pressure to about 100psi. Good luck with repair.

First, check that you are using the proper nails. The FP602 needs Full Round Head nails with plastic collation. If you are using Clipped Head nails with the paper tape collation the angle of the nails not let the driver catch the next nail and drive it into your work.
If you have the correct nails, check the magazine to make sure the nails are feeding all the way up to the driver. If there is anything blocking the way or if the spring on the feeder isn't taught enough to pull the clip all the way up the driver won't be able to catch the next nail and drive it in.

Yes, if it is not pushing the safety back far enough. Also check for pieces of nails debris in the slave slide.

check that 2 are not jammed together/and safty is able to be pushed

Nail guns either have a switch or a seperate trigger assembly for two options - automatic, or 'bump' fire, and sequential fire. Sequential firing may be best for you since the nose must be fully depressed and the trigger pulled for each nail.

If you're stuck with bump firing, practice your technique. Double fires often occur when the workpiece bounces back into the nose of the gun; learn to 'bounce' the gun off the material to avoid this second contact.

If you're getting double fires in sequential mode, the problem could be more serious. I keep a can of aerosol silicone lubricant on hand to clean and lubricate the feed mechanism and magazine. Make sure your tool is clean and lubricated before each use, including the 3-5 drops on the air coupling.

Check that your air pressure is not set too high. Overdriving nails reduces their effectiveness and can cause tool malfunction.

This problem could also be caused by worn out O-rings or other parts within the tool. If you're not comfortable servicing the tool yourself, take it in for repair/maintenance work.

Another important thing to remember: With tools like this, you get what you pay for. A cheap nailgun will never function as well as a quality nailgun.

Your air pressure is dropping everytime you fire. It sound like your compressor is not cutting back in untill it to low. Not giving your tool enough continuess pressure. Your compressor cut in pressure should be around 90-100psi no less. and your max. pressure no more then 120psi. (Make sure your regulator is set at 110psi)
good luck...!

I just finished 800 square feet of oak flooring with this nailer. You might have to increase the psi at the gun and make sure it gets a good square firm hit to set the nail. You can swing and hit the thing pretty hard, I hit it hard to set warped boards in place. I used 120 psi for best results, I tried 90 psi but had more misfires. The nail head only needs to set in far enough so the head is touching the tongue and so the next board will fit. The nail won't be buried into the tongue like you might think. If the occasional nail protrudes from the board you can use a nail set to drive the nail the rest of the way in, but I found that most of the nails didn't want to set by hand. I either clipped off the head with side cutters and folded over the remaining tab or did my best to set the nail if it wasn't long enough to clip. If it bends over really ugly, just carve a little wood from the groove lands on the next board to clear the nail stub. Removing the nails is difficult, it's best to let them be rather than risk damaging the flooring. Also, don't let the gun get down to the last nail. Sometimes if you try to fire the last nail on a strip it will twist and damage the flooring. Always keep a few nails in the gun just to be safe. Hope this helps.

Professional-grade varieties are automatic, and fire a nail directly upon pulling the trigger. A semi-automatic nail gun is more appropriate for beginners, since it requires a two step process: pull the trigger and then tap the barrel against the wood. This safety feature protects the user from accidentally firing a nail gun and injuring himself or others.