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FEP quest leaking from feedneck


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#1 BiggieCheez

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Posted 15 January 2014 - 09:48 AM

I just picked up an '07 FEP quest off of the forums and there is a very slight and steady leak coming out of the feedneck. I know that the leak is not physically coming out of the feedneck, but that is where I can hear it. It is not loud enough to hear out of the barrel and I checked, it is not the solenoid.


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#2 andrewthewookie

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Posted 15 January 2014 - 11:09 AM

Check the front bolt guide o-ring and the front bolt o-ring. Those two are the ones that keep the dump chamber pressure sealed from the front. Also, does the leak change at all when you shoot, or does it stay consistent even between shots?


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#3 BiggieCheez

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Posted 15 January 2014 - 05:18 PM

Check the front bolt guide o-ring and the front bolt o-ring. Those two are the ones that keep the dump chamber pressure sealed from the front. Also, does the leak change at all when you shoot, or does it stay consistent even between shots?

The leak goes away for a bit after a shot, but steadily comes back to a slow leak as it did before. 

 

EDIT: I changed the oring in the front of the bolt guide and it does not leak anymore. Thank you wookie ;)  


Edited by BiggieCheez, 15 January 2014 - 05:18 PM.

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#4 Talucci

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Posted 18 January 2014 - 01:32 AM

Ive had the same issue with my quest and my Victory. It goes away after a shot always. Ive been told its the regulator filling up with air. Ive completely replaced all the orings and still had that issue, could be the lpr pressure you hear at first. I have no clue, but it always goes away thankfully.



#5 BiggieCheez

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Posted 18 January 2014 - 09:50 AM

OK just one more question. Should my LPR be set to 90 or 180? The guy at my local shop told me that 90 was just the operating pressure and that it should be just under 200. Is this correct?

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#6 andrewthewookie

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Posted 18 January 2014 - 11:12 AM

The LPR is always the lower pressure, and is what drives the bolt. The "just under 200" is the main HPR setting, and is the pressure the dump chamber fills with. Basically, you want enough LPR pressure to cycle the bolt fully and consistently, then HPR to chrono. So don't worry about a specific HPR pressure, since that will always be a little different every time you chrono.


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