FX Impact regulator pressure going up

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I've experienced it. Seems to happen when u get too high on the regulator but not really sure. Before condemning the gauge shoot it over the chrony. If you're at 140 bar you'll be shooting exact kings between 890-950. You didn't mention your caliber 
if it creeps up to 170 it'll be approaching 1000 fps. 
i would not shoot the gun with the regulator set all the way clockwise. You could damage the regulator. I think you show contact your shop for some warranty work, or get them to send you a replacement gauge if it's reading that high when it should be 40 or so. There is a link to a repair PDFs file. I read that if the regulator gauge reads the same as the bottle gauge then it's an o-ring problem. When it reads 140 is the bottle at 140 as well? If so more than likely o-ring. I'll search for that link. 
Mine hasn't done it since. Wish I knew. Check those two o-rings on the regulator screw. That's all I can suggest. 
 
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Thanks so much, Drumsnguns (I particularly like the troubleshooting doc :)); I'm gonna have a heart-to-heart with Kevin at AOA on Monday. It appears it's just a faulty gauge. She's still under warranty, so.... I re-set the regulator and threw some lead over the Chrony. I'm getting good numbers. I'm going to do a full shot string tomorrow; I'm beat right now...
 
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I have the same problem with the regulator gauge come to 170bar. Keep up post.

Edit: 
I just shoot from 220bar down to 150bar by punching my target paper. The regulator from 170bar drop down 148-150bar, too. I don't see anything wrong since the target get in the hole. I hope nothing wrong later, but now it seems doing fine. 

Thank you
Vu
 
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Yeah, Txboy; I'm gonna have a heart-to-heart with him tomorrow. At any rate, I'm going to have to send her back to AOA for repair as I've got bigger fish to fry now. I thought that re-setting the reg pressure might clear it up. Unfortunately, like the rocket scientist I am, I failed to completely bleed the pressure off the high pressure side before I turned the reg screw in. I, of course, probably dimpled the face of the reg rod (reg piston) and damaged the regulator. Now the numbers are whackadoo. I should have just ran a shot string right away to determine whether it was the gauge or the reg. Oh well, live 'n learn, right? I sure learned a lot about the FX Impact regulator... https://www.youtube.com/watch?v=pBWcRqPesws
 
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I was thinking about this the other day. When I set my regulator above 150, I was thinking that as the reg screw got that far out it started to lose it's grip and the vibration of the shot might have caused it to keep backing out.... which might explain why I saw a velocity increase with each shot until it blew and the V dropped way down. 

I you are wanting to go for that high V then I might suggest putting the smallest drop of VC-3 adhesive on the edge of the reg screw and the reg housing to keep it from backing out. VC-3 is good because it won't harden...it stays pliable after it sets.

But one needs to realize that you are on the edge there of blowing out any of a number of o-rings when this high on the reg., so probably not the best idea to do this. But if it's backing out then maybe the VC-3 will help stop that increase of pressure.
 
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I called Kevin at AoA, he told me it should be ok if there have no LEAK. I don't even touch it since I have no experience. After a few days warm weather like 70s, it got itself back to 150bar. Who know what is going on, but I take it. I put it back on the chronograph, it read 840s @4. When I got the gun for the first time it read 834s @4, at 150-155bar.
Vu
 
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