Solenoid problems?

I think it would be easier for you to just buy a new solenoid and attach it where the current on is attached. You can contact the manufacturer of the current one and ask about replacing it.

It still clicks when I unplug/plug it back in. It's just that 5hrs later co2 is still coming out at the same rate it always does.

check for an air leak. The solenoid might be fine.

Where at?

if there was a leak why would co2 still be going into the tank?

Close the valve at the CO2 tank. If your bubble counter still says CO2 is going into the tank, then you have a air leak in your line.

You might try removing, or bypassing, the solenoid and see if you still have an CO2 leak. If your bubble counter still says CO2 is going into the tank, then the solenoid is not your problem.

It's just a few quick checks before you buy an expensive solenoid.

Well its a paintball tank, the tank it's self doesn't have a on/off valve. But if I manually turn the working pressure on the regulator down the co2 does stop within 30min.