Leaking WE Scar/M4 mag

[KheSan]

Ok guys. The mag is leaking from the knocker valve. I have tried everything. I have removed the KV and soaked it over night in silicone oil but it still leaks. O-rings themselves look ok. When i first took the KV out i found that one of the rings had slipped from its location and had gotten hung up on top of one of the other rings. When i found that i thought great, easy fix.. But that wasnt it. So i tried soaking it overnight but still leaking. I am now trying to take the valve itself apart but there is a tiny snap ring on the valve stem that i cannot get off. Is there a special pair of snap ring pliers that I can buy to do this? Has anybody gotten them off any other way? Is it even worth trying? I'm assuming that there may be something trapped inside or a damaged or dislodged O-ring or something. Anybody dealt with this before?

[cetane]

taking it apart won't help.. there are 3 o-rings on the valve. one where the valve lifts off the seat to let gas through and 2 on the body sealing. if it is leaking gas when not shooting it is either the first or second o-ring. if the rings look good could be a bent stem not seating the o-ring well or the o-ring seating surface is damaged. inspect them very closely. that snap ring should come out with a pair of pliers if i remember right.

[KheSan]

Thanks Cetane. Id did manage to get it off using a jewellers screwdriver. Ther is anothe O-ring inside. I have it all disassembleand will let it soak again overnight to clean everything off. If this doesnt do it nothing will. The mag is only a couple months ild and has hardly been used and always stored under pressure. Dont get why it would just start leaking like that???????

Anyway thanks again for the input.

[KheSan]

So I tore down the valve completely. Let the O-rings sit in Sil Oil for a full week. Made sure there was nothing inside the valve and re-assembled and it is still leaking. I guess the only last course of action is to completely replace the O-rings. Any suggestions?

[turok_t]

Sometimes that's not going to help, u need to use blue gasket to improve the seal. Check your pm

[KheSan]

Sometimes that's not going to help, u need to use blue gasket to improve the seal. Check your pm

I responded to your PM but its not the spine. No leak at all from the spine. It leaks from the gas hole at the top of the mag - essentially the knocker valve. Everything is tight except you can actually hear gas when you put your ear to the gas hole and see a lot of bubbles from only that location when submerged in water.

[ex]

Ya one of my mags is doing the same even after sealing the rest with black gasket maker. I'm just going to buy a few spare valves.

[mrfister]

have u tried loctite 565? dunno it this would work for you problem