My pistol is shooting gas out... (A.K.A venting)

[highny]

Hey there! Long story short, here is the problem.

http://s57.photobucket.com/albums/g2...=problem-1.mp4

Any idea why it's doing that?

Thanks.

[CDN_Stalker]

95% chance it's a lubrication issue. When was it lubed last and where inside the gun?

[Kid]

How many mags are doing that? One or all three?

Are you letting them warm up to room temperature before shooting?

[coach]

flow valve is sticking or being stuck open.

break down the pistol. clean it and re-lube it.
drop a couple drop of silly oil in the the top of the flow valve and one or two around the back. (the button like thing on the back of the mag that the hammer/striker hits)
work the valve in and out.

[Thenooblord]

its not the flow valve, the slide is jamming, the shot when it vents you can see the slide goes back a quarter inch and stops

[Kos-Mos]

Slide is not sticking, it shoots 2 shots perfectly before venting.

Remove the BBU and check for a broken float valve or bent spring. Also check for cracked nozzle. Theses work on negative pressure, so if there is a leak before the end of the cycle, it will start to vent right away... or simply not blow back.

[Thenooblord]

uhh.... yes it shoots fine twice, then jams... if it were a cracked nozzle or broken rocket valve the first two shots would be impossible
anyways, seeing as its a KJW, Id guess that the slide is getting jammed on the outer barrel before the lugs disengage and it gets stuck before it trips the knocker disconnect, so it vents all the gas

[Styrak]

Mags not fully charged with gas?

[highny]

Hey there!

Thanks for the help guys and I did what some of you mention.

I disassemble the whole entire pistol(almost lost darn small spring in the hammer assembly)and gave it a whip and use silicone oil/grease to re-lube.

After-wards, I disassemble my 3 mags, took the bottom part off and then the top(lip) off. added silicone oil to the seals. I also added a drop(or two) of silicone oil into the valve. I used some grease on the outside of the valve part to make sure the button didn't stick.

After I got everything back together. I manage to get roughly 7-10 dry fire, 3-4 bb fire before venting...

This weekend I got a chance to use a friends TM1911 mag, and it worked like a charm. Shot 10 shot before running out of gas(He did a few shots before hand).

So I did a bit of research when I got home. Turns out that on ehobby website. The mags I got says "Take HFC 22 Gas out of the box". Now I'm carious to know if that's the only type of gas it'll take to make it work? Here's the link to the mags on ehobby.

I also took some time searching for valves. Their very expensive... Some valves are almost as much as the mags itself.... Why is that?...

Thanks for all the help!

Originally Posted by Styrak

Mags not fully charged with gas?

I held the propane in place for about 10-12 second... I'm pretty sure that's how long it usually take. Maybe overfill some might say. But I do listen to the propane tank and the mag to make sure it's fully charge(or stop flowing).

Originally Posted by Kid

How many mags are doing that? One or all three?

Are you letting them warm up to room temperature before shooting?

This happens to all 3 mags, that's why I suspect it's a gun issue. Then again, I clean and try out a friends TM mag and it works fine.

I testing my pistol in the basement, so after I fill them up, I sit on them for a min or two to make sure their warm enough... Or at least to freezing cold.




Also, forgot to mention. The 1911 is a KJW KP-07.

[Kid]

HFC 22 = Green Gas = Propane

I don't know what specific issue is causing your problem, but you're charging your mags too long. There's no need to charge these mags longer than four seconds.

Edit, when you shake your propane tank, do you feel liquid?

[Kos-Mos]

Originally Posted by Kid

HFC 22 = Green Gas = Propane

I don't know what specific issue is causing your problem, but you're charging your mags too long. There's no need to charge these mags longer than four seconds.

Edit, when you shake your propane tank, do you feel liquid?

You can't overcharge mags... it juste waste a bit of time, but personally I prefer to be sure it's full than run out of gaz after 5 shots.

[Styrak]

Sounds like the problem is solved guys, no need to help him anymore.

[highny]

Originally Posted by Kid

when you shake your propane tank, do you feel liquid?

Yes, and it's a new tank too. Just picked it up not too long ago...

Originally Posted by Kos-Mos

I prefer to be sure it's full than run out of gaz after 5 shots.

I agree, I had that happen, ran out of cover to suicide and take the other team with me with 2 pistol(one was a buddy, at the time I was using a Well 1911, sure miss it) my gun shot 10 shots, my buddy shot 2... Disappointing...

Originally Posted by Styrak

Sounds like the problem is solved guys, no need to help him anymore.

So what's the answer to my problem... I think I might have miss it...

[Styrak]

Originally Posted by highny

So what's the answer to my problem... I think I might have miss it...

You said after you lubed it and whatever, you got over 10 shots and your buddy's TM mag only got 10 shots.

So I assumed that means you're happy now?

[highny]

Originally Posted by Styrak

So I assumed that means you're happy now?

Well... I still can't manage to shoot more than 15 shots...

Maybe I could use different gas? Or should I buy a different mag? May idea what brand would fit kjws?