Hey guys had this out for practice last night and for the first time ever my LPR kept creeping , i should it and went back to normal i lowered the lpr to 40 then within a minute it was at 90 , then slowed down it eventually crept to 240 psi , i shoot a rope and it went back to about 50 it stayed there the whole night .. could this be just an o ring? ,
The most likely causes for this are that one of the bolt kit o-rings that separates HP and LP air is leaking, or that the LPR's Schrader valve is leaking.
The o-rings to be concerned with are the middle o-ring on the bolt, and the second and third o-rings on the bolt pin - counting from the back.
If the bolt stays to the rear when the pressure is high, then you are most likely looking at a problem with the Schrader valve or middle bolt o-ring; if the bolt is pushed forwards, then the issue is most likely down to the bolt pin o-rings.
An o-ring issue may just need the o-ring to be cleaned or greased, or it may need replacing altogether.
Be aware that a scratch inside the body or inside the bolt could have the same effect as an o-ring leak.