[dr.hook]

Does any one know how long a small bottle of autoweld should last ?Spot welded two cab corners and the tanks mt.

[oldred]

What size tank? Sounds like maybe the solenoid is stuck or has a bit of junk in it holding it open allowing the gas to flow continuously. Does the gas shut off when you release the trigger? Is it leaking around the fitting on the tank? You no doubt have a leak somewhere.

[dr.hook]

it's roughly a3 ft tank. and you can hear the gas when the trigger is pulled . i also turn it off when i power off .maybe they gave me a near mt tank.i have a 2 dial gauge which didn't seem to move off 0.

[oldred]

If you are using C/25(CO2/Argon) you should have over 1800 lbs PSI and straight CO2 should be over 500 lbs so if the high pressure gauge did not or only barely moved then you started with an empty tank. With the C/25 the high pressure gauge will drop as the gas is used and the pressure reading is an indication of how much remains but the CO2 will not start to drop until the tank is nearly empty. It will fall a small amount when you start using it due to temperature drop but with CO2 you cannot tell how much remains in the tank by looking at the pressure on the gauge, unless of course it is at or near zero in which case it is empty.