Today I bought a Piranha Evo and I wouldn't say that I'm the most knowledgeable about Paint-Balling and the maintenance that it requires. I have two problems that I believe shouldn't be that major and hopefully are an easy fix. I had my gun working great and I left my house for about a half an hour and when I came back I found the compressed air tank was a bit loose from the gun. When I tried to tighten it the air just spewed out the small hole in the handle or whatever it is called with the air guage on it. Nothing seems loose and I changed nothing between when I had it working and when this happened. The other problem I have is that the rear block seems to be stuck half way in/out. I watched videos and other seem to slide right out. Please get back to me soon if you can help me. Thank You.
Air down the barrel is usually the cupseal. Take the part below the barrel off, take out that spring and the thing attached to it is the cupseal. Check that and see if its got a good lip and seal on it. If you ever have problems putting the hammer and bolt back in, push that thing called a sear release( On the grip frame) and it'l let the hammer slide in. If it gets stuck coming out, make sure all the O-rings on the bolt are good. If ones damaged or broke it can jam the gun up.
O.G. Highly Modified Piranha Evo, Ext and Gsx.
just last week i had an issue with air out the barrel... cup seal looked in perfect condition.
i ended up removing the valve to find out that the cupseal wouldnt even fit through the back side of the valve because of a bur. i took some 200 grit sand paper rolled into a tube and spun it one or twice and that was all it needed to slide through smoothly.
so if the cup seal looks like it is totaly fine, take out the valve and see if the valve is damaged at all.