FX 400 just died. What happened?

[Hw9720]

Shot a bottle down to empty to move the valve. Last bit of air exited much like a Co2 gun will do when out of gas.
Changed the valve over to a CF bottle. Change went without a hitch. Screwed new bottle on the gun, would not take air.
Put a third bottle on I have, same thing will not take air. Air coming out the barrel. Was ist los?

tim

 

[cthao]

Have you tried cocking the gun?

 

[cahil_2]

You need to cock the rifle then fill it.

 

[Theman406]

Trying cocking the fx 400, then screwing the bottle on. You probably unseated the valve.

 

[Stubbers]

+1 to all the suggestions thus far, if that doesn't work then it may be time to disassemble and inspect for damage on the poppet.

-Matt

 

[SilentSquirrel]

When the bottle got low did you back off on the hammer spring adjuster?
I'm no fix-t wiz, but it makes sense to me do that and avoid breaking the valve stem or valve seat.

Let's see what other more experienced members have to say

Good luck
Edward

 

[Firewalker]

Broken poppet; Poppet spring relaxed: Gun not cocked: Debris on the valve seat:

 

[Hw9720]

gun cocks fine. Tried cocking it and firing it during fill to try to unseat valve if that is the issue. But then there is the issue with the air free flowing out he barrel?

tim

 

[Stubbers]

gun cocks fine. Tried cocking it and firing it during fill to try to unseat valve if that is the issue. But then there is the issue with the air free flowing out he barrel?

tim

Sounds like you damaged the poppet or valve seat when dry firing, not really the best way to empty a gun, live and learn.

-Matt

 

[wildcj5]

gun cocks fine. Tried cocking it and firing it during fill to try to unseat valve if that is the issue. But then there is the issue with the air free flowing out he barrel?

tim

You mention putting a bottle on. Did the bottle already have air or are you putting on an empty bottle?

Like mentioned it is possible when shooting it down when it got close to empty you might have damaged the valve pin.

Also like above try cocking it and fill from a tank to the fill port. Give it a good sharp blast. If you are filling it slow it may not set the valve.

After the sharp blast if it stops leaking fill is slowly like normal.

 

[Firewalker]

You will need to disassemble it to see the valve and valve seat.

 

[Trucker3573]

Dry firing many times like that to get a gun down in my experience hasn’t been a good thing. I did that on an fx streamline and it broke the valve seat. Did exactly the same thing your gun is doing. It’s a small cheap part at least. I think a little tricky to get out. I sent my gun in for re seal and repair.

 

[jking]

Probably the best way to have emptied the bottle would have been to loosen a gauge. Sorry that you have issues now, but this suggestion may help someone in the future.

 

[Gerry52]

Shooting below the reg pressure is not a good thing for the gun. Next time if you need to degas, remove the stock & slowly unscrew the stock screw receptacle. It will degas the reg with no problems. Royale is a beautifully simple design & should be fairly easy to diagnose.

 

[smandl77]

Dry firing many times like that to get a gun down in my experience hasn’t been a good thing. I did that on an fx streamline and it broke the valve seat. Did exactly the same thing your gun is doing. It’s a small cheap part at least. I think a little tricky to get out. I sent my gun in for re seal and repair.

What did it cost to send in and get the work done?

 

[Trucker3573]

What did it cost to send in and get the work done?

I can’t remember for sure. Maybe a cpl hundred. The whole gun was resealed though. It’s been awhile but I think that is pretty close.

 

[smandl77]

I can’t remember for sure. Maybe a cpl hundred. The whole gun was resealed though. It’s been awhile but I think that is pretty close.

Cheers

 

[bchannell]

Well, it takes like 10 minutes to get the gun apart and the valve out. The seat is a bit more work, but completely doable. Check to see if the valve is damaged or the seat is leaking. If you see nothing wrong, the oring on the seat is likely the culprit. I had two 400's and both of them eventually leaked at the valve seat oring, but once replaced, that was the end of the issue.
You need a small "L" shaped pic, with a smooth end to reach down inside and pull the seat out. Work your way around it to pull evenly, and it'll come right out. To replace it, find a wood or plastic dowel to push it back in place. It's not hard.

 

[SilentSquirrel]

Well, it takes like 10 minutes to get the gun apart and the valve out. The seat is a bit more work, but completely doable. Check to see if the valve is damaged or the seat is leaking. If you see nothing wrong, the oring on the seat is likely the culprit. I had two 400's and both of them eventually leaked at the valve seat oring, but once replaced, that was the end of the issue.
You need a small "L" shaped pic, with a smooth end to reach down inside and pull the seat out. Work your way around it to pull evenly, and it'll come right out. To replace it, find a wood or plastic dowel to push it back in place. It's not hard.

@bchannell 's choice of tools for the job is perfectly adequate.
However, if you have spare cash and are also a tool freak there is a specialty tool that aids in removing the seat as well as another that helps install the valve.
Cape Fear and Utah probably have them
This is not a recommendation.
Just a point of information
Edward

PS
If you check out Ernest Rowes videos on YouTube you can see the process in action