Jump to content


1911 PTP Mk I fires only 7 shots from a filled magazine

1911 PTP

  • Please log in to reply
5 replies to this topic

#1 Thouin

Thouin

    Newbie

  • Members
  • Pip
  • 6 posts
  • Country:

Posted 16 February 2013 - 12:57 PM

Hi,

Last week, I purchased a 1911 Mark I PTP. I fell in love with it, it was accurate, reliable and realistic. I fired about 200 shots per day with it since then. However, yesterday,  after I shot a full 14 BB out of it with no problem whatsoever, the gun started to spew liquid propane at each shot. Refilling the tank wouldn't solve the problem, the pistol would only fire 5-6 shots (and a lot of liquid propane along with those) and couldn't cycle the action.

I have cleaned it thorougly and applied silicon to moving parts and seals, as prescribed by the operator's manual whitout any improvement.

If I wait for a hour or so, the pistol will function properly for about 10 shots but that's all. I suspect some kind of valve to be kept open because it looks like the pistol is using WAY to much propane for one shot.

Any idea how to solve this issue?

Thanks a lot!

NOTE: I used propane, thus voiding my guaranty, but I applied two drops of silicon oil on top of the propane tank every 10 magazine fill or so and kept the pistol correctly lubricated at all times.

#2 Thouin

Thouin

    Newbie

  • Members
  • Pip
  • 6 posts
  • Country:

Posted 16 February 2013 - 01:04 PM

I also forgot to mention that the cylinder assembly gets very cold after only a magazine. This didn't occur before the problem started to appear.

#3 Chuck S

Chuck S

    Guru

  • Members
  • PipPipPipPip
  • 1,150 posts
  • Gender:Male
  • Location:Cleveland, Ohio
  • Country:

Posted 17 February 2013 - 11:23 AM

Venting gas causes the cold from the rapid drop in pressure.

Venting gas from the release usually just means it's loose.  Tighten it.  If that doesn't work pull the valve, clean it, lube it and join the O-ring discussions.  :)

-- Chuck

#4 Thouin

Thouin

    Newbie

  • Members
  • Pip
  • 6 posts
  • Country:

Posted 17 February 2013 - 02:20 PM

What screw should I tighten? The one on the magazine or underneath the cylinder assembly, on the slide?

#5 General Pickle

General Pickle

    Specialist

  • Members
  • PipPipPip
  • 308 posts
  • Gender:Male
  • Location:Oregon
  • Interests:tactical stuffs(airsoft, real steel, knives etc.), mechanical and manufacturing engineering, computers, gaming, the great outdoors
  • Country:

Posted 17 February 2013 - 03:57 PM

I believe he is talking about the valve itself. The valves have little cuts on the sides for a valve tool, so that you can unscrew the valve from the assembly and inspect the valve on clean/lubricate it. It's possible you simply need to tighten that valve (near the top of the magazine, where the gas goes into the gun).

#6 Thouin

Thouin

    Newbie

  • Members
  • Pip
  • 6 posts
  • Country:

Posted 18 February 2013 - 06:59 PM

Thanks a lot! I'll try it as soon as I can.




0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users