eek?

[mattie]

ok,
i am totally confuzled over this so any help that you could give would be greatly needed
i have got a pmi pro on co2 (vert for now) and it keeps on beating down every two or three shots like there is no gas getting through. i took it into the nice people and just paintball and they replaced some parts but when i got it back it just started doing it again... somone said something about the cocking spring?
please help
matt

 

[Uncle Fester]

hi

Give lps a call 01707 325007 these are the best guys to ask for advice on most guns

 

[le-pig]

do you meen shoot down,ie balls drop short when shooting strings,and what regs are on it

 

[Billy No Mates]

by reading that it sounds like mattie is currently screwing the bottle straight into the gun, vertically.
So there arent any regs on it at all.

Although most of the "pro" piranahs appear to come with some kinda reg.
Do you actually have one, or have i mis-read this?

For consistency, i do advise you get one.

As for the shoot down. This could be a number of things.

Is it that you are firing, and the gun seems to fire 3-4 weak "shots" with a single trigger pull, and then stops, and is uncocked?

or, is it that you are firing, one shot at a time, and each one goes less distance than the previous?

Is the bottle filled correctly? not over full?
How much is the velocity adjuster wound in?
Is the gun clean?

 

[mattie]

i was playing with a expansion chamber but when tht didnt do any thing i tried it vert.
as for the actual problem it fires repeatedly on one trigger pull before uncocking itself it looks like the bolt isnt catching or something
i have tried emptying and refilling the bottle several times and cleaned the gun as well and nothing seems to make a differance.

the velocity has been screwed out to maximum so im not sure

 

[Uncle Fester]

Could be the hammer O ring ??
Or the anti-syphon is set wrong,is it a new bottle ?

 

[le-pig]

had the same problem on a syder once ,the only way it stopped was when we fitted a different frame(tried every thing else possable )

 

[James@Kartelprime]

my old spyder had a similiar problem with it not cocking, turned out to be the sear was set to low. just a thort,

 

[mattie]

the sear...how would i set that higher?
as for the frame, it has an after market hyper frame so i tried the stock one first but tht didnt seem to make a differance.

the bottle was the one that came with the gun... i bought it all as a kit of somone on here

 

[dr.strangelove]

I'd check the hammer o-ring. And try firing the marker without the bolt. In the JT my friend had, he was having a similar problem, but it would fire and recock just fine without the bolt. Some new bolt o-rings and a little oil and he was back in action. There's also the possibility that the hammer and/or sear are worn down and one or the other isn't catching anymore. It's a longshot, but if all else fails...