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G-MAN
12-05-2007, 03:54 PM
ive got a gun that ive just took the numatics off and put on a pump kit.now the guns shoots fine but the only problem is when i shoot the gun(it shoots fine) but i get a lot of air hissing from down the barrel.it goes away as soon as i recock it.but it does this every time i shoot i have to quickly have to recock it. plz help. what am i missin?thx

drg
12-05-2007, 04:29 PM
Tuning .... springs or reg pressure or both

CockerCraze
12-05-2007, 04:59 PM
yeah its springs, i bet the rear spring is putting too much pressure on your valve and not allowing it to close all the way. try backing off your IVG then increase your hpr pressure. if that doesnt work then you need a lighter spring.

wiffle32
12-05-2007, 09:10 PM
yeah its springs, i bet the rear spring is putting too much pressure on your valve and not allowing it to close all the way. try backing off your IVG then increase your hpr pressure. if that doesnt work then you need a lighter spring.

Or a heavier valve spring.

G-MAN
12-05-2007, 09:44 PM
thx guys ill try that as soon as i get home.

ghostowner
01-22-2009, 10:19 AM
just turn your inline reg pressure up till it stops leaking down the barrel