air pressure in rear shock.

[craigyboy]

ps another question when I pump up My dhx 5.0 shock with my fox pump say to 150 psi, I take off the pump, then check it again later and its down to about 120 psi. What going on here, I thought the shock wouldnt loose any air when I detach or reattach the pump.

[IronJim]

the reason is that there is so much pressure in such a small chamber that when you remove the pumpit will lose some of the psi. when i remove mine it lose 10 psi, you shouldnt be losing 30 psi though. i would try removing the pump fast, or an easy way of doing it would be to pump it up to 180 psi if you want 150 psi.

[keen]

When you take an air reading the hose must fill w/ air first. If you measure 30 psi losses each time you attach the pump that is the amount of air filling the hose.