lpr Leak

Lefidele729 · 05-21-2009, 10:42 PM

ok, so both my quests have this problem. when i gas it up the lpr shoots up to like 150. i've tried unscrewing the adjustment screw all the way untill it was out. so now when ever i want to adjust it i just unscrew or screw the cap all together. sometimes i can adjust the screw so it stops leaking but the psi isnt between 70-90. any ideas?

z4ck · 05-22-2009, 12:59 AM

Quote:

Originally Posted by Lefidele729

ok, so both my quests have this problem. when i gas it up the lpr shoots up to like 150. i've tried unscrewing the adjustment screw all the way untill it was out. so now when ever i want to adjust it i just unscrew or screw the cap all together. sometimes i can adjust the screw so it stops leaking but the psi isnt between 70-90. any ideas?

Rebuild your lpr, replace middle pin oring.

Uziel Gal · 05-22-2009, 07:05 AM

When the gauge over pressurises, does the bolt stay back, or does it get pushed forwards?

Fabregas04 · 05-22-2009, 02:49 PM

Whenever my LPR gauge jumps up, I know I have a bad/broken middle bolt o-ring. For some reason, every poly o-ring I've ever put on the bolt breaks in like 3 shots, so it's bunna for me. I'd check that.

Lefidele729 · 05-22-2009, 04:18 PM

The bolt is pushed back.

Uziel Gal · 05-22-2009, 04:45 PM

Not the pin o-rings then.

As Fabregas stated, most likely the middle bolt o-ring, or perhaps the LPR Schrader valve. There are other things (scratched sealing surfaces for instance), but middle bolt o-ring or Schrader valve would be favourite.

Lefidele729 · 05-23-2009, 02:50 AM

ok so i feel like a nub for creating this thread. i just replaced the oring and all is well. . .

::Juggernaut:: · 05-25-2009, 10:31 PM

what about this I put air into my quest the lpr went to 200 but I have it set for 100 so i shot it once and it went back down to the 90-100 i have it set at. Is it fine? And also what LPR do you guys recommend i've herd 90-100 but 70-85

Uziel Gal · 05-26-2009, 12:50 AM

After that initial 200psi reading, does the pressure stay at 100psi during use?

::Juggernaut:: · 05-26-2009, 11:56 AM

yeah.

Uziel Gal · 05-26-2009, 01:21 PM

Doesn't sound like a bolt/pin o-ring issue or a Schrader valve issue in that case.

Either the LPR piston isn't reacting quickly enough to the change in pressure, or air is passing through the LPR quicker than it can react.

You might want to try a slightly smaller piston o-ring, and ensure that it is lubricated correctly. Probably also a good idea to switch to an on/off ASA (assuming that you are using the stock fixed ASA) and open it gradually when you gas up the marker to make the flow of air in to the marker less sudden. Between making the piston move more freely, and slowing the initial flow of air, you should stop the pressure spike through the LPR.

z4ck · 05-27-2009, 07:24 PM

Check if your lpr spring.