Rear air struts deflate overnight - can't detect any leaks

Forum for Subaru XT and/or XT6 owners

Moderators: Hocrest, Myxalplyx, Huck369, Moodybluesr, grossgary, john in KY, SUBBYRU89, austinXT6

Rear air struts deflate overnight - can't detect any leaks

Postby grossgary on Sat Feb 25, 2017 8:40 am

I've spent like 10 hours or so now converting this car back to air struts.

Rear struts deflate overnight
Soapy water reveals no leaks, even if I take them off the car.

Top bushings are all new, surfaces cleaned, and greased.
Airline oring is new.
solenoid orings new I think but I'll check.

How can I find the leak?

1. I'm thinking maybe the solenoids are bleeding pressure back into the air lines - allowing air out of the strut but not external so soapy water doesn't show it.

I can't think of how to test this?

2. Is anyone familiar with the top mount bushings and how they seal the top of the air strut?
Where the strut rod comes through is sealed by the bushings and top mount. Seems like a terrible design.

I know these are prone to leak if you lift an XT6, I guess it torques it and puts an angle on it making the bushings not sit flat and seal.
Gary
89 XT6, rear LSD
02 OBW VDC H6
06 Tribeca
grossgary
Moderator
 
Posts: 11636
Joined: Wed Jun 18, 2003 9:34 pm
Location: midatlantic

Re: Rear air struts deflate overnight - can't detect any leaks

Postby grossgary on Wed Mar 01, 2017 12:52 pm

It was the rear bags leaking. They leak so slowly that soapy/water doesn't reveal it.

Drove into work today with full air suspension for the first time in too many years, glad to have it back!

Hopefully I'll recondition some struts, add the height control button and replace all the orings (even though I replaced most of them during all this work).
Gary
89 XT6, rear LSD
02 OBW VDC H6
06 Tribeca
grossgary
Moderator
 
Posts: 11636
Joined: Wed Jun 18, 2003 9:34 pm
Location: midatlantic

Re: Rear air struts deflate overnight - can't detect any leaks

Postby Myxalplyx on Sat Aug 04, 2018 9:03 am

Is your air suspension still holding out Gary?
Kevin Thomas
1989 2.7ltr XT6 AWD/Auto *WndCttr*
JC Sports Intake, Rallispec Header, Custom 2.5" exhaust with 2.5" Magnaflow muffler
Advanced Timing 32 degrees
ProECM Lightweight pulley
4.44 gears, LSD
User avatar
Myxalplyx
Moderator
 
Posts: 2772
Joined: Thu Jul 11, 2002 8:55 pm
Location: New Castle, DE

Re: Rear air struts deflate overnight - can't detect any leaks

Postby grossgary on Mon Jan 14, 2019 3:32 pm

Myxalplyx wrote:Is your air suspension still holding out Gary?

Hey, wasn't able to log in for awhile. Sadly, no, I drove them for a few months or so and installed new EJ front, EA rear struts. And I installed your tires this morning for the winter!

I guess I'm done with air suspension. While "working struts" can be found, I want something that would last long term and the availability isn't worth my time considering new EJ and EA stuff is readily available.
Gary
89 XT6, rear LSD
02 OBW VDC H6
06 Tribeca
grossgary
Moderator
 
Posts: 11636
Joined: Wed Jun 18, 2003 9:34 pm
Location: midatlantic

Re: Rear air struts deflate overnight - can't detect any leaks

Postby john in KY on Tue Jan 15, 2019 6:48 pm

Get the struts pumped up to where they should be and then unplug the solenoids and time will tell if that makes a difference.
john in KY
Moderator
 
Posts: 3166
Joined: Tue Jul 16, 2002 8:12 pm
Location: KY

Re: Rear air struts deflate overnight - can't detect any leaks

Postby grossgary on Thu Jan 24, 2019 9:50 am

john in KY wrote:Get the struts pumped up to where they should be and then unplug the solenoids and time will tell if that makes a difference.
I submerged the strut bags in water and there were tiny bubbles all over the surface of the air bags. It was like those aqaurim stones where air is coming through many, many porous holes. Repairing the bags wasn't working so I converted to EJ struts, axles, and hubs.
Gary
89 XT6, rear LSD
02 OBW VDC H6
06 Tribeca
grossgary
Moderator
 
Posts: 11636
Joined: Wed Jun 18, 2003 9:34 pm
Location: midatlantic


Return to Subaru XT discussions

Who is online

Users browsing this forum: No registered users and 18 guests

cron