Fan comes on new gas cartigage.gun will not fire

don't have any of them but sounds jammed from sitting . too dry. anyplace tto put oil for the driver to move?

Your question isn't specific enough. Multiple things need to work together to fire a gas fired nail gun;
First the obvious user faults;
Low battery
Low gas
Nail guide jam

Not so obvious;
Broken/worn return springs (nail guide and firing bolt)
Faulty micro switches
Bent or impacted internal mechanism
Fan fault
Ignition or spark fault
Dirty or damaged ignition chamber (just like a car piston, cylinder and rings)
Faulty micro controller and ignition circuitry

It's either the wire or fan motor itself.

_Jeff

Fan running when trigger pressed is normal however to make it fire you need to press on the work probe first and the fan should start running, at this point the gas should be injected and pressing the trigger should create the spark to fire the gun, if all works as above but the gun won't fire check the gas, the metering valve on the can should have a yellow ring and when pressing the can nozzle on a hard surface, gas should be released, if not the can either has (a) insufficient gas, (b) the nozzle is not correctly fitted (c) the metering valve is faulty, if the can emits gas the gun will need to be checked for spark and the seals will need checking

Various reasons, secondary switch faulty. gas out of date, gas is colld, iar leak, faulty spark unit.

Suggest you get it checked out at a repair centre.

Does it flash when you pull the trigger? Does the fan start? What model? Is the gas in date? Is the inlet valve the correct way up?

your gas has expired , look at bottom of canister check the date. buy new gas also make sure cap on gas canister is down all the way till it snapps new gas doesnt come with cap down all the way

Try a different gas cartridge and make sure the top of the cartridge is snapped tightly onto the cartridge body.

Any time these guns become intermittent or stop firing but the fan still runs, the first the to check is the expiration date on the gas cartridges. The do expire and this will make the gun work inconsistently or not at all.

Hi,
Probably needs cleaning. You`ll need two new o`rings.