FX FX Wildcat MK3 leak (cannot be filled anymore)

[hgg2k]

FX Wildcat MK3 .22, with a slow leak from day one. Bought brand new. Leaking from the barrel.
Takes more than a month for pressure to drop down to 100 bar, so I did not go to the trouble to return it.
Big mistake. After a few months of inactivity, I tried to fill it from empty and I could not.
All the air was leaking from the barrel.

I thought that the valve pin had an issue and I replaced the tiny o-ring. ID 1.5mm x CS1.0mm
Same thing!
All air is coming out from the barrel. Even if I cock it, the air is still coming out from the barrel
and the breech pellet hole! If I cover both holes with my fingers no air is escaping from elsewhere.

Any ideas before I throw it in the bin with all the leaking FXs...?
Thanks.

 

[SciueraPlumbea]

FX Wildcat MK3 .22, with a slow leak from day one. Bought brand new. Leaking from the barrel.
Takes more than a month for pressure to drop down to 100 bar, so I did not go to the trouble to return it.
Big mistake. After a few months of inactivity, I tried to fill it from empty and I could not.
All the air was leaking from the barrel.

I thought that the valve pin had an issue and I replaced the tiny o-ring. ID 1.5mm x CS1.0mm
Same thing!
All air is coming out from the barrel. Even if I cock it, the air is still coming out from the barrel
and the breech pellet hole! If I cover both holes with my fingers no air is escaping from elsewhere.

Any ideas before I throw it in the bin with all the leaking FXs...?
Thanks.

I'll pay you to throw it away into my hands.

Yes, the valve seat, seal of the poppet against the housing.

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[Scotay42]

Send it for warranty repair. Idk why anyone would not send back a New leaker.

 

[hgg2k]

Warranty repair no longer possible... Expired.

 

[Scotay42]

Youtube, get an Oring kit and fix it, get it fixed by a shop or sell it at 50% of retail for someome else to fix it. Those are about the only realistic options.

 

[SciueraPlumbea]

The valve seal where the poppet valve rests and forms a seal with the valve seat is a very high probability here. Unless you have the regulator at an absurdly low pressure and the spring set soooo high in tension that it pushes up aginst the stem hard enough to cause a micro gap which allows a basically audibly imperceptible slow leak. or the surface of the valve seat or poppet are not perfectly flush, OR the oring on the valve seat is damaged.

 

[hgg2k]

I did not remove the valve seat to inspect it. Not very easy but I will try that as well.
The surface of the valve pin was pretty smooth though and even the small o-ring
that I replaced did not seem damaged. I am trying to figure out from the exploded
parts diagram what part does this tiny o-ring seal.

 

[rwsmike]

I would send it in and get it fixed

 

[hgg2k]

I would send it in and get it fixed

I would have done it in the first place but here in Greece if they stop you and find an airgun in your car, they treat you like you are a criminal... Even trying to ship it to the dealer is not easy and not all couriers will accept it.

 

[SciueraPlumbea]

I did not remove the valve seat to inspect it. Not very easy but I will try that as well.
The surface of the valve pin was pretty smooth though and even the small o-ring
that I replaced did not seem damaged. I am trying to figure out from the exploded
parts diagram what part does this tiny o-ring seal.

not the pin, the face of the poppet valve where it rests against the seat. They both have to be machined perfectly flat and interface perfectly to form a good seal.

 

[hgg2k]

What part does this tiny o-ring seal?
What is its function?

 

[hgg2k]

not the pin, the face of the poppet valve where it rests against the seat. They both have to be machined perfectly flat and interface perfectly to form a good seal.

Yes, it looked perfectly even without any scratched or imperfections. Not sure about the seat though, I would have to remove it.

 

[SciueraPlumbea]

What part does this tiny o-ring seal?
What is its function?

So Air doesn't leak through the hammer/spring channel

 

[hgg2k]

So Air doesn't leak through the hammer/spring channel

Only from barrel and breech (pellet opening).

 

[SciueraPlumbea]

Yes, it looked perfectly even without any scratched or imperfections. Not sure about the seat though, I would have to remove it.

the size of imperfection needed for a leak so slow it takes a month to empty is not visually detectable without magnifcation. we're talking "high spots" as little as .001" or .0625"mm

 

[SciueraPlumbea]

Only from barrel and breech (pellet opening).

No, i'm saying the purpose of that 1.5mm oring is to prevent that.
it blocks air from going through the poppet stem channel out into the hammer/ hammer spring channel

 

[hgg2k]

the size of imperfection needed for a leak so slow it takes a month to empty is not visually detectable without magnifcation

Is that a metal to metal air seal ???

 

[hgg2k]

No, i'm saying the purpose of that 1.5mm oring is to prevent that.
it blocks air from going through the poppet stem channel out into the hammer/ hammer spring channel

So, the small o-ring is working because the leak is only from the barrel and pellet hole, correct?

 

[SciueraPlumbea]

Is that a metal to metal air seal ???

 

[hgg2k]

That is a beautifully bad design!