JamesQ

Recently brought my zex kit off a friend used. Installed it last weekend with him and just had the chance to install the nitrous pressure gauge today. I was wondering could a nearly empty bottle (1.5 pound left in 10lb bottle) cause the gauge to only read 200psi?

Here's what happened.

Installed gauge (autometer phantom electrical n2o pressure), and then it on. Pressure reads 200 psi. I thought it was a little low so I take it to my scale and it reads 15.5 pounds (empty bottle weights 14). I was thinking maybe the bottle below operating temp so I go to heat it up via bathtub (bottle warmer coming in next week). I thought at least the psi would raise a little after the heating but it didnt. The gauge still reads 200psi. I know the gauge aint faulty because it was taken off a friend's car.

So basically im asking if this was normal or not, because I would hate to know my gauge is busted.

thanks

raceACCORDingly

empty bottle is exactly your problem. normally after half my bottle is gone i cant get it above 750 without my bottle warmer. do you have a bottle warmer? its a must, its almost as important as the n2o in the bottle. spray a 75 shot at 800psi and spray one at 1050psi, night and day difference.

jessemarCc

im guessing your guage is messed up unless you have a leak somewhere. good luck finding the problem.

Frozen E

when you shake the bottle can you feel ANY liquid sloshing around? If not you might not get a big pressure increase by heating the vapor up. PLus it's hard to heat up vapor just by heating the bottle a little bit. If you had some liquid left in there you'd be heating the liquid which causes it to boil off in the cylinder giving you an almost instant increase in tank pressure. Get it refilled and THEN see what your gauge does.

JamesQ

yea was definitely the empty bottle issue. Sprayed for the first time at 850 psi (only put in oven for 5 mins) and it pulls pretty nicely. Even my friends were impressed with how my civic ran on just a 55 shot.

Thanks for the help guys.