powershift
Full Access Member
Over a few days my '12 suspension will have dropped with the battery unplugged. The drop will occur both in normal mode and 4X4 height where in the latter mode it will drop down past normal mode. Its not one corner, but usually front or both front and rear depending on the duration of time. Its progressed and before it would only drop overnight in 4X4, not normal mode. Another interesting behavior now is if the doors are closed and I connect the battery after its been sitting for days, it thinks its in access mode and will adjust the suspension accordingly.
I looked at vids and searched here on what to do and I used a spray bottle with water and soap, mirror and flashlight. I looked at each air shock fitting after spraying water and one corner seemed like it might be leaking? Its not obvious and the tiny bubbles may be evaporating but maybe I have a leak there. Its nothing like an air mattress where its a continuous bubble.
Underneath the truck I pulled the air compressor cover off and hit what I could there and didn't see any leak.
Sprayed the black input tube whatever that is with a neck going into the unit
On the same device what looks certainly like an air line didn't leak either
On the compressor towards the rear there was one line I sprayed. Then another line fitting with the green connectors on it that runs up the frame rail on the right
Sprayed the center valve block, including the line up top not in view
Next is to find and spray the front and rear valve blocks, but after all that I'm not hopeful to find a leak at either location. I didn't check the tank fitting, saw one air line going to it.
I was reading that the valve blocks can fail internally from residue in the air. Where does the air leak out in those cases where the residue is the root cause? If its not there then my air bags might be leaking? Any tips on where to look for the leak?
I looked at vids and searched here on what to do and I used a spray bottle with water and soap, mirror and flashlight. I looked at each air shock fitting after spraying water and one corner seemed like it might be leaking? Its not obvious and the tiny bubbles may be evaporating but maybe I have a leak there. Its nothing like an air mattress where its a continuous bubble.
Underneath the truck I pulled the air compressor cover off and hit what I could there and didn't see any leak.
Sprayed the black input tube whatever that is with a neck going into the unit
On the same device what looks certainly like an air line didn't leak either
On the compressor towards the rear there was one line I sprayed. Then another line fitting with the green connectors on it that runs up the frame rail on the right
Sprayed the center valve block, including the line up top not in view
Next is to find and spray the front and rear valve blocks, but after all that I'm not hopeful to find a leak at either location. I didn't check the tank fitting, saw one air line going to it.
I was reading that the valve blocks can fail internally from residue in the air. Where does the air leak out in those cases where the residue is the root cause? If its not there then my air bags might be leaking? Any tips on where to look for the leak?
