Reverse Leakage? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

jimmydean · 01-11-2007, 11:22 PM

Ok, so after the 3rd try, I got my drivers rear to hold air (or at least it has for over an hour, new record there).

So I went out to check pressure and what was 70/70 front, 70/70 rear has become 70/75 rear. My passenger rear seems to be inflating itself! These are brand new valves, what the hell?

I only have about 100 psi in the tank, but the passenger rear is slowly creeping up. Is the fill valve not closed all the way?

PBFAB.COM · 01-11-2007, 11:28 PM

That's the only way the bag can receive more air.

jimmydean · 01-11-2007, 11:34 PM

Is there anything I can do short of replacing the valve? Cycle it a few times or something? I'm now afraid to fill my tank to 160 (140/160 pressure switch). The bag is rated at 180psi, but I sure as hell don't want to roll with a corner in the air.

jimmydean · 01-12-2007, 12:32 PM

So without adding additional air to the tank, I cycled the valve a few times before I went to bed. I left the leaky corner at about 40 psi and I don't think it got much more than that this morning. I may be out out of air in the tank though.

When I get home tonight, I will add some air to the tank and cycle it again if everything else is holding.

pharcyde05 · 01-12-2007, 01:41 PM

i have ad a leak up also depending on the valve you could have a problem with the diaphram not sealing compleatly or you could have some debre stuck in it so i would fill the tank up to 160 175 and then hold dump valve open so that bag wont inflate then while dump is open open fill valve and its will blow strait out do that and see if it helps

01-11-2007, 11:22 PM	#1
jimmydean Registered User Join Date: May 2005 Location: Beaverton, OR Posts: 3,728	Reverse Leakage? Ok, so after the 3rd try, I got my drivers rear to hold air (or at least it has for over an hour, new record there). So I went out to check pressure and what was 70/70 front, 70/70 rear has become 70/75 rear. My passenger rear seems to be inflating itself! These are brand new valves, what the hell? I only have about 100 psi in the tank, but the passenger rear is slowly creeping up. Is the fill valve not closed all the way?

01-11-2007, 11:28 PM	#2
PBFAB.COM Senior Member Join Date: Dec 2003 Location: Mesa,Az Posts: 3,981	Re: Reverse Leakage? That's the only way the bag can receive more air. __________________ www.PorterbuiltFabrication.com Phone: 480-297-2621 E-mail: sales@pbfab.com Find us on FaceBook under Porterbuilt Fabrication Specializing in Chassis and Suspension Components for your Classic Chevrolet Truck. We offer components from the following manufacturers: Porterbuilt Accuair Ridetech (Air Ride Technologies) Air Lift Wilwood Intro Unisteer ECE Gotta Show Air Lift Borgeson CPP Supporting this forum since 2003!

01-11-2007, 11:34 PM	#3
jimmydean Registered User Join Date: May 2005 Location: Beaverton, OR Posts: 3,728	Re: Reverse Leakage? Is there anything I can do short of replacing the valve? Cycle it a few times or something? I'm now afraid to fill my tank to 160 (140/160 pressure switch). The bag is rated at 180psi, but I sure as hell don't want to roll with a corner in the air.

01-12-2007, 12:32 PM	#4
jimmydean Registered User Join Date: May 2005 Location: Beaverton, OR Posts: 3,728	Re: Reverse Leakage? So without adding additional air to the tank, I cycled the valve a few times before I went to bed. I left the leaky corner at about 40 psi and I don't think it got much more than that this morning. I may be out out of air in the tank though. When I get home tonight, I will add some air to the tank and cycle it again if everything else is holding.

01-12-2007, 01:41 PM	#5
pharcyde05 Senior Member Join Date: Mar 2006 Location: modesto CA Posts: 239	Re: Reverse Leakage? i have ad a leak up also depending on the valve you could have a problem with the diaphram not sealing compleatly or you could have some debre stuck in it so i would fill the tank up to 160 175 and then hold dump valve open so that bag wont inflate then while dump is open open fill valve and its will blow strait out do that and see if it helps __________________ http://www.cardomain.com/ride/2461088



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