PM7 leak in front of noid

[deadmeat3344]

Sad update: Got the gun back yesterday and it has the same leak (although it is slightly less). Waiting on Dye.

Current leak status vid: https://www.youtube.com/watch?v=atr0...ature=youtu.be

[deadmeat3344]

Pic of the washer stack from Carl @ Dye .

[Trbo323]

That's a new one.

Personally I would have taken the screws to the grinder and shortened them a bit but washers work as well

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[deadmeat3344]

UPDATE: I ended up sending this in to Dye. They discovered that the supplied noid hardware was bottoming out in the body preventing the noid from being locked down. They added more washers which resolved the issue, waiting to get the gun back.

[deadmeat3344]

Update: with the LPR seal replaced the retrofit new noid still leaks in the same spot, but now the original noid is leak free!. HPR pressure is at 230 (which is what I needed to get 335 fps with reball on a .675 pwr insert) with the lpr just high enough to be consistent and cycle at 10bps.

130 psi on the hpr with the lpr up just enough to cycle with the new noid still leaked.

Will contact Dye on this. This noid design might simply not work with the PM7. I theorize it is too physically short to seal properly

Attached are pics showing the noid differences as well as the grease pattern on the body which might show where the leak is with the new noid.

[deadmeat3344]

If it’s coming from under body I’m going to say it’s a lpr pressure issue or solenoid. Lpr body orings will leak from front by lpr cap bad. Best bet try new reg seat when you get it. I’ve had newer style reg seats still fail, fyi. I’ve received newer reg seats and material is different and softer. Any chance you have a different noid to check? I’ve had old noids leak in same general area, clean lubed and fixed the issue

Both my new retrofit/upgrade noid from Dye and the factory noid have the same exact leak. LPR Seat arrives tomorrow, hopefully that's it.

[Boots4036]

If it’s coming from under body I’m going to say it’s a lpr pressure issue or solenoid. Lpr body orings will leak from front by lpr cap bad. Best bet try new reg seat when you get it. I’ve had newer style reg seats still fail, fyi. I’ve received newer reg seats and material is different and softer. Any chance you have a different noid to check? I’ve had old noids leak in same general area, clean lubed and fixed the issue

[deadmeat3344]

Have you tried 12? If it's not a typo then you currently have the wrong size

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Yea tried 012 at first per the manual.

[Kit352]

My pm7 was a mess after sitting in my basement for like 10 years. Captain oring kit replaced every seal and it's been fine. I didn't even use the factory manual for oring replacement, just used the included color coded chart. Zero guess work.
Sounds like you are over pressuring it at the very least. I shoot reballs at 250fps and the gun ends up being around 270 with paint so just a tweek of the lpr and I'm off.
Are you base line setting up the gun correctly? Lpr out x turns then got to get to ball park fps then lpr to suit. Some tweek for snap and other tweek for sound.

[Trbo323]

Have you tried 12? If it's not a typo then you currently have the wrong size

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[deadmeat3344]

I already am running 013's on the lpr body and also tried 014's with no change.

[Trbo323]

I have a dm6 and rebuilt the whole thing with buna, probably 5 years ago and it's still going strong, granted mine sees very little use as a loaner/backup but still. The older dye/proto stuff doesn't care what material you use. I've always had the opinion that since about 2012 dye stuff got really picky and it will absolutely matter what material you have but the older stuff is great because you can put anything in there and it will work.

I know there were a few typos in the dm6 manual for o ring sizes regarding the LPR. The outer body o rings are supposed to be a 013 and the manual says they are a 012.

I saw the pm7 manual also calls for 012 so I'm wondering if that is also a typo. You might want to try 013 and see what happens because that could cause air to bypass the LPR all together and cause your leak. I'm not sure why it would stop when you 0 out the LPR but it might be worth trying anyway

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[deadmeat3344]

When I first got the gun I put about 3 hoppers through it. Nothing more than that and it did not leak at the time (however, that was on a windy day which might have masked the leak if it was present) . The internals revealed it has not been serviced in some time. The guy I got it from claimed it was gone through in 2023 and it was clearly in need of a rebuild. LPR was very dirty, seat was shot. And it had a buna 006/70 oring inside the lpr (that the piston stem rides in) instead of the urethane 90 that was supposed to be there.

My new LPR seat comes in tomorrow, will post an update once that's done.

[Trbo323]

As a note, I'm shooting the reball with a .675 insert that's a perfect bore match.When I tested weights reball was quite a bit lighter vs my test paint (where its basically right at 300 fps at this given pressure). The leak occurs regardless of HPR pressure, even at 130 psi. How would I be feeding the noid 400 psi??
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That was a typo, I meant the 240psi you mentioned earlier

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What measurements are you looking for on the LPR?.

Diameter and length, a photo would help as well

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Also as a note I am waiting on a new LPR seat which arrives tomorrow. So my if seat is bad and causing the LPR to overpressure the noid that would make sense.

Yeah if it's anything simple I would hope the seat would be it. It could easily be causing what you are seeing.

A few other things that could cause it,

#13 interior top hat 013
#8 outer sleeve, the second ring from the front 020
The rear most outer body o ring on the LPR (very low chance. I'm pretty sure this would vent from somewhere else)
Either interior o rings in the LPR

Was this marker working at any point before changing parts?

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[deadmeat3344]

As a note, I'm shooting the reball with a .675 insert that's a perfect bore match.When I tested weights reball was quite a bit lighter vs my test paint (where its basically right at 300 fps at this given pressure). The leak occurs regardless of HPR pressure, even at 130 psi. How would I be feeding the noid 400 psi??

What measurements are you looking for on the LPR?

Also as a note I am waiting on a new LPR seat which arrives tomorrow. So my if seat is bad and causing the LPR to overpressure the noid that would make sense.