Very slow air leaks?

[blackdiesel]

My BSA R10 has a very slow air leak. It will leak down to 100 bar after about a week. It drives me crazy, but it's not really affecting me shooting the gun. I fill to 230 bar and shoot it down to about 135 bar. But I notice that when I pull it out again the pressure has dropped to 100 bar. I'm stuck in the middle of trying to fix it and not worrying about it.

 

[boscoebrea]

 I know that song! butt back to that problem ,I have 3 PCP with the problem and I hand pump,I think I will order some seals for them soon,that way at least I will have them.....and when one gets bad enough I will fix it ,instead of grabbing a different rifle....yea that's the ticket.

 

[JCD]

Might be a simple fix but I still go by the advise the best car mechanic I've ever had gave me.... Does the it run and drive as it should? (I said yes) Then it's only going to get easier to find the problem as it gets worse. (I agreed and left).

Of course, car or airgun, it's going to break down eventually. But with evidence of a problem, the timeframe just became a little smaller on average.

 

[vdwb]

I had that annoying problem in one of my Brods, finally used the bathtub to find and fix the air leak. What a PIA.

 

[jking]

I'd fix it. I think it helps your confidence when you go to shoot knowing that everything is good with the gun even though it's not going to affect the accuracy more than likely. Who knows maybe a little soapy water will reveal a small leak that's easy to fix. Also, it might decide to completely fail when you least want it to.

JK

 

[Michael]

I hate o-rings! Wish we could do without them, but obviously they play a role. I've got 2 different airguns with slow leaks at the moment. I'm with jking - fix it now so it's one less thing stuck in your head. Plus the leak could get worse and present itself at an inopportune moment.

 

[zx10wall]

Would not accept it. Squirt bottle of soapy water usually works. If not, dunk that dude! Even slow leaks show up. 

 

[Centercut]

Agree with Derrick ( @zx10wall ). Find that leak, it'll drive you crazy and will eventually get worse. Use the bleeder holes on the air pressure tube. Put a little dab of silicon grease over each hole, and that'll let you know if you have a leak at the gauge end of the tube, the regulator, or the breech end of the tube. If its not one of those then its pretty much got to be the valve or seat, or the gauge itself. I recently had a very odd slow leak on my Cricket mini. It would very slow (overnight) leak down, but stop losing pressure at the reg. set pressure. Turns out the reg. itself had an internal leak... I'm referencing troubleshooting for the Cricket/Vulcan/Taipan/EDgun type of airguns, but similar action can be taken for others like FX and Daystate.

 

[randy_68]

Yep it will drive you crazy. I've got two tore apart now that have slow leaks. I knew where they were leaking but it took several unsuccessful attempts at fixing them before I found the issues. 

You might as well try and fix them now, you'll feel better when its done.

 

[blackdiesel]

I guess what's making me lean towards "not worrying about it" is the fact that I don't get a chance to hunt or do pest control so I just plink. I mainly just shoot this gun in my backyard. Secondly, I don't have to worry about air, so it's no big deal filling it up from 100 bar when I get back around to shooting it. Thirdly, I have other PCPs that I would take hunting if I got a chance.

 

[zx10wall]

Good grief, send me the gun, I’ll fix it. It’s bothering me from 850 miles away. Make it stop Norm

 

[blackdiesel]

Good grief, send me the gun, I’ll fix it. It’s bothering me from 850 miles away. Make it stop Norm

I have a P-rod that it took me 2 years to get around to fixing a leak on

 

[airgunfans]

losing 35 bars over 7 days = 5 bars per day. That's not too slow. My Huben K1 PCP has been leaking at a rate of about 1.8 bars per day and still I can locate the point of leakage by the soapy water method. 

 

[Eddie_E]

My big leak on my BSA Buccaneer was the fill valve. I was able to clean the brass first with a pencil eraser and then lap the plastic valve with polishing toothpaste. It's working now.