LPR creep

[opethian2001]

I've had a timmy for a few weeks now, and have the low pressure mod on it. My problem is that I set the low pressure to 85-90 psi, but the pressure will slowly creep up to about 130 psi within a few minutes. If I fire a shot, the pressure goes back to 85 psi. This happens very slowly--I can just barely see the pressure move, but if I look after a few minutes, the pressure is up. Like I mentioned, it tops out at about 130.

My setup is a set pressure screw in tank (a centerflag nitro) that goes to a centerflag hyper in line regulator (set to about 225 psi). I try to have the in line reg set at 220-230 and the Low pessure reg on the marker set to 85-90 psi. This gives me about 290 fps, just where I want it.

I have taken the LPR apart and cleaned and lubed it, but the problem is not fixed. Anyone have any ideas what I should do?

Thanks in advance!

[PetWoody]

u prolly just got some dirt inside the reg housing, take the LP reg off clean all of it up, grease it back up and put it back on.

[opethian2001]

Thanks for the quick reply.

I did take off the regulator and clean it, so that is not the problem. I will do it again, however. Any other ideas?

[Vern1]

After you screw off the regulator shell, look inside and remove the 3/8" brass nut with the pin coming out of it.
Behind this nut is a little o-ring.
This o-ring is your regulator seat.
If it is the least bit dirty, it will creep up.
If you have already done the LP mod, you have an extra o-ring from the top regulator.
Hope this helps.