FX Fx trouble shooting

I believe what you are hearing is absolutely normal. Between the regulator and valve in your guns is a space called the plenum. This is the space where the pressure regulated air is stored. When you fire a shot the valve feeds from the plenum to propel the pellet. You are hearing air rushing back into the plenum, refilling it. Not a leak at all.
 
I believe what you are hearing is absolutely normal. Between the regulator and valve in your guns is a space called the plenum. This is the space where the pressure regulated air is stored. When you fire a shot the valve feeds from the plenum to propel the pellet. You are hearing air rushing back into the plenum, refilling it. Not a leak at all.
Thank you very much Trucker3573 for that answer!
 
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