Reply To: FX Impact leak….part 2. It's back…

Forums PCP Airguns FX Impact leak….part 2. It's back… Reply To: FX Impact leak….part 2. It's back…

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heavy-impact
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Airgun-hobbyist

 To get the speed you shooting at, did you by chance preload the hammer spring? When I preloaded the hammer spring screw on the adjustment wheel and took off the bottle sometimes all my air would leak out at the valve stem seal.  I could only get it to seal and accept air within the system from a new bottle by first turning the wheel to it's lower settings to relieve the valve stem rod and hammer spring assembly of the preload before screwing on a bottle.  Sounds to me like something is not allowing the valve seal to do it's job, like too much spring pressure, or not enough return spring pressure.

You can get around all that by holding the cocking lever back just where you feel some tension while you screw the bottle on. Once the pressure hits the valve it stays sealed.