Updated to add etching primer, after I did this, it doesnt seem to leak at all now.
How to keep Airbags from leaking
If you jack up the truck til the rear end hangs, you will see where the bottom of the airbag has all the little rectangular seal notches. Now look at the black plastic below it, that it seals too. Mine was hideous, and full of crap. My bags would leak down after a day quite a bit. The fix is below!!
It doesnt hurt to check your lines at the pump with soapy water for leaks and or tightness, this will probably not be your leak, but start with this anyways.
1. Clean black plastic pieces with brake cleaner
2. Get a sheet of 400 grit sand paper and have at the black plastic pieces
3. Get a sheet of 800 grit sand paper and have at the black plastic pieces
4. Clean black plastic pieces with brake cleaner a last time
5. Test for leaks over a few days, if needed go to step 6
6. Go buy a can of etching primer $8 and spray several coats on black plastic
Tape off air bags, as they flex, the primer wont stay on very long if painted.
7. Sand with 800 or 1000 grit till smooth as glass, airbags will seal now for sure.
Congrats your done, now it holds air without leaking for 3-4 days before I notice any differance!!
It doesnt hurt to check your lines at the pump with soapy water for leaks and or tightness, this will probably not be your leak, but start with this anyways.
1. Clean black plastic pieces with brake cleaner
2. Get a sheet of 400 grit sand paper and have at the black plastic pieces
3. Get a sheet of 800 grit sand paper and have at the black plastic pieces
4. Clean black plastic pieces with brake cleaner a last time
5. Test for leaks over a few days, if needed go to step 6
6. Go buy a can of etching primer $8 and spray several coats on black plastic
Tape off air bags, as they flex, the primer wont stay on very long if painted.
7. Sand with 800 or 1000 grit till smooth as glass, airbags will seal now for sure.
Congrats your done, now it holds air without leaking for 3-4 days before I notice any differance!!
1 - 20 of 28 Posts
cool piece of info....
I have an 08 trailblazer and I tried to fix my air bag like u say and mine have nothing on the bottom is there any pics on these to fix this problem bc my passager side leaks bad
yea pics I have one that bleeds down too .
I know what I am doing after I get the e-fans installed and oil/spark plugs changed.
Hmmm...looking at the dates I might have to take me own pics.
Interesting write-up...is this a common issue?
Good piece of information. Mine leaks down pretty quick
Yes, the bags dry rot over the years and leak. Some guys fix them, others say f-it and swap to coil springs.Interesting write-up...is this a common issue?
When I switched over to the Beltech shocks, I had the back end raised way up with tires still on the ground. This allowed me to get up around the plastic cones and clean out all the debris-dirt, specs, grit what have you. My bags have now stayed up for over 3 weeks with no leak downs. :yay2:
Revival!
Should I be adding this to my to-do list if the rear end keeps readjusting on our Aero all the time? Every time we get in it....driving down the road....it seems like the bags adjust and then take a short break, and then adjust some more. I haven't crawled under to check them out for debris but this sounds like a simple repair. Just wondering if it's normal for them to adjust frequently or if they should stay aired up for while?
Should I be adding this to my to-do list if the rear end keeps readjusting on our Aero all the time? Every time we get in it....driving down the road....it seems like the bags adjust and then take a short break, and then adjust some more. I haven't crawled under to check them out for debris but this sounds like a simple repair. Just wondering if it's normal for them to adjust frequently or if they should stay aired up for while?
Revival!
Should I be adding this to my to-do list if the rear end keeps readjusting on our Aero all the time? Every time we get in it....driving down the road....it seems like the bags adjust and then take a short break, and then adjust some more. I haven't crawled under to check them out for debris but this sounds like a simple repair. Just wondering if it's normal for them to adjust frequently or if they should stay aired up for while?
I finally replaced mine just this week with the lowered springs from Tony since I already had the Belltech shocks. Man what a difference, it actually makes me notice how less responsive the front is now. And the stance is much better. The bags where they roll over had all kinds of tiny serrations.
I need to just order rear springs and get rid of my bags....
1 - 20 of 28 Posts
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