I know this has probably been over before.
My 2008 opti has some moisture out of the air shrader valve, one dealer is adamant that this not normal and another said that it is normal for the air compressor to make some moisture.
As a precution I replaced the reed plate assembly and seals in the compressor and still seem to have the moisture.
The motor ran and started great after I changed this, but after about 30 mins on the water would not start again unless I had someone on the Key and repeatedly pressed the air shredder valve (where I noticed the moisture again) and motor once again seemed to idle again ok.
Port Rail is new, have not replaced tracker valve in starboard rail.
Thoughts?