Nail plunger is stuck - RTO Paslode 902000 IM250 Ii Cordless 16 Gauge 3/4 2 1/2 Inch Straight Finish Nailer

Odds are you have a brad or part of a brad stuck in the slide. Use a flashlight & another brad or paperclip to remove the piece of nail that is blocking the slide.

The allen screw/s that you mention are there to plug holes where automatic equipment would normally connect (such as automatic nailing machines) . This is only a plug and should not be driven in too far. I have also seen allen screws installed in the head to repair small crack/s.

This problem could be caused by the head gasket fliped the wrong way not sealing small hole in the body. Also the head valve gasket (small round gasket between headvalve and head) could be place with vent hole mis-aligned. Check these two items and post again.

could be a jammed nail in the nose assembly, try removing all the nails and dry firing. If still the same after making sure nothing stuck in the nose, you probably have an issue with the firing valve or piston.

You may try to see if the plunger is in a down position, if so you may be able to take a screw dirver or punch of some sort and drive the plunger back into the head and free up the nail that is wedged in the feed chamber. Hope this helps. Good Luck.

You have a obstruction in the path of the plunger taake it apart and clean it.

look for a jammed nail in the nose area, UNPLUG AIR FIRST. look for a bent driver and lastly when was the last time tool was serviced, you possibly have a dry o ring. Let me know

before tearing apart spray gun plunger and shaft with carb cleaner than spray with a spray lube like wd40 sometimes the plunger gets debris on it if still misfiring call dewalts 800 number they can advise of local repair shop and also advise if problem can be fixed by u

There is a number of reasons that this will happen. Is the driver (plunger) physically stuck? Take a small screw driver and see if it can manually be pushed back. It may also be a broken head valve spring, or a stuck head valve (you have to remove the rear cap to get to these parts) Maybe this unit just needs an O-ring kit. Try these things and let me know

This happens quite a bit with nailers. There are is an easy method to attempt repair and more difficult procedure. There is some hammering involved, so to protect the head you must remove it and the cylinder and place the gun on a piece of wood with noise up. I use a piece of allen wrench as a punch (any good hard steel that just fits in the nose will do )and a large hammer. You must be very carefull about pieces of metal flying as you hammer metal on metal. My hammer is made of copper. Several swift hammer blows will free the driver. The quick and easy way is to hammer without removing the head. Most stuck nails are removed this way in the field due to time involved in taking the gun apart. Either way you choose, there is a chance of breaking something. Good luck and be carefull.