Bag Guru's please read.........

When ever I hit the switch to raise the front of my truck it gos up but once I hit the back up the front sags down and vice versa if I raise the back first and then raise the front the rear drops a little. Is this from weight transfer of the truck being leveled out? I don't have a pressure gauge yet so I can't tell if either the front or the rear looses pressure while raising the truck.
Thanks in advance
LeDevil

how many valves you have ?

it sounds like you dont have enough tank pressure. You need back pressure against your valves to hold, if you burn up most of your tank pressure lifting up the front of your truck and your compressor hasnt kicked on yet you can lift anything else. I bought a truck that had the same problem, the kid used a 75 on 105 off pressure switch. Thats not enough air to do anything.

Yeah like they said, what type of valves do you have and what is your pressure switch set at? If you don't have enough pressure left in your tank when you raise the front or rear it will cause the other to loss pressure, that is if you are using the one way vavles that you have to put two together to make your up and down (you could also run some check valves on your inlet side of the valve to stop this). Now if you are running a two way valve like a manifold valve you shouldn't have that problem.

I have 4 valves in total 1 for front up, 1 for front down, 1 for rear up, and 1 for rear down. Pressure switch is said to be a 150psi. My Compressor is a Viair 200h rated for 150psi (i know small and weak compressor). So should I raise one end and then let pressure build up and do the other? Thanks for the advice and replys
LeDevil

yea I would say more pressure, a larger tank, or check valves on at least the front lines.

that would work, but I would deffinatly upgrade something in the future.