Tuning Dreamline Lite leak

[leduke]

I have an FX Dreamline Lite that won't hold air.

- This is a .177 caliber with the reg set at 95bar. The bottle is a 480cc FX carbon fiber bottle.

- The gun has a leak that is fairly quick---it lost 125 bar in about an hour (225 to about 100)

I have noticed the following things:

1. - When I screw on the bottle I hear a faint hiss sound that seems to come from inside the bottle. On unscrewing the bottle the regulator air also drops to zero—after I pull the bottle off, AND there is a hiss that lasts a few seconds—coming from the valve piece that screws into the bottle. (In the past I have taken off the bottle and do not see the regulator pressure drop. I must turn the reg screw CCW for the pressure to drop)

2 - With the regulator at zero, and the regulator adjustment screw tightened fully, I screw on the bottle. When I then screw the regulator adjustment screw CCW to let air into the regulator, air goes in, but I hear the hissing noise again.

3. - I have applied soapy water around the valves and where the valve screws into the gun and don't see any bubble forming.

Have I damaged the regulator or its seals? 

Any help is greatly appreciated.

Thanks

 

[Odoyle]

Sounds like you UN intentionally tried to ruin your regulator while adjusting it under full pressure.

 

[Odoyle]

Hope you get offered warranty because you are probably going to need a new regulator or a rebuild. Never adjust the regulator under pressure without firing couple shots between 1/4 turns or better yet degass and dry fire unscrew the bottle then adjust the regulator with zero air to be sure no damage.

 

[xyon]

Sounds like you intentionally tried to ruin your regulator while adjusting it under full pressure.

Why be rude. My read of the post is that the reg was only adjusted CCW (counter clockwise) under pressure, which is ok.

 

[xyon]

If it's not leaking from any of the externally visible connections (do check the gauges too). Then it could be the valve. try closing the breech/probe and put a balloon over the muzzle and see if it fills with any air.

 

[Odoyle]

Sounds like you intentionally tried to ruin your regulator while adjusting it under full pressure.

Why be rude. My read of the post is that the reg was only adjusted CCW (counter clockwise) under pressure, which is ok.

GOTCHA MY BAD EDITED IT An observation that's all. Meant to say UN intentionally.

 

[leduke]

Nothing was intentional. I was pretty careful and followed the guidelines when tuning under pressure, BUT I could have made a mistake. 

Xyon - If the ballon were to fill, what would that mean, and what might the fix be?

Thanks again

 

[Odoyle]

Valve seat if the balloon fills up.

 

[Odoyle]

Could be minor and have dust or debris in the valve and if you are lucky it may go way after some shooting. Sometimes guns fix themselves believe it or not.

 

[xyon]

GOTCHA MY BAD EDITED IT An observation that's all. Meant to say UN intentionally.

All good, my bad too for thinking you were being intentional
@leduke - What Odoyle says about the valve seat is right.
A bit of a pain to replace, so I hope it's not that or it fixes itself.

 

[leduke]

I will try that. Thanks everyone for the advice. 

 

[FX-USA]

Hi Leduke, 
Sorry to hear about the difficulties you are having please feel free to email in and get in touch with our technicians if your experiencing any more troubles. Our email is [email protected] or you can call in (866) 639-0772 between 9 am – 4pm EST. 



Regards,

FX Airguns USA

 

[leduke]

Xyon - I put a bag over the barrel and screwed on the bottle. The bag filled with air! I think it may be the valve. We fired a couple of pellets but it still kept leaking air.

This Dreamline is still under warranty and I will talk to FX tmrw.

I called FX support today, but a tech was unavailable. I will try again.

Thanks again for the tip.

 

[xyon]

Xyon - I put a bag over the barrel and screwed on the bottle. The bag filled with air! I think it may be the valve. We fired a couple of pellets but it still kept leaking air.

This Dreamline is still under warranty and I will talk to FX tmrw.

I called FX support today, but a tech was unavailable. I will try again.

Thanks again for the tip.

no worries. If it's under warranty I'm sure your dealer or FX will fix it.

 

[leduke]

Well, the problem seems to be fixed. I disassembled the valve after talking to an FX tech and then watching a couple of videos.

After reassembling, I put the bottle back on and no leaks. I gave the bottle a bit more air, and waited 3 hrs. No leaking! 

My guess is that the valve seat vibrated out of place. The valve itself was clean as can be.