Greetings from Melbourne, Australia
Over the last few weeks I've been having the random EAS height rise issue which seems to clear itself pretty quickly. There's plenty about this on this site which seems to suggest a failing driver pack.
Several days ago the system seemed to take too long to rise up; just after that it went into a hard EAS fault; all the lights on the EAS indicator on and a 'slow: 55 kph' message. I'm not too worried about the random rising and the EAS fault; it's that it seems to have developed a leak somewhere. I will deal with the random rising and fault message in time, or perhaps they're connected to the leak which is my concern.
1) I bought air fittings and some hose so I can inflate the system manually with my bike foot pump. It works beautifully; all four corners are now sitting nice and high with 60 psi in each bag and not deflating so I know the leak is not in the airbags or lines.
2) I bought a few more fittings so I can attach a line to the compressor then attach the bike pump's gauge to that line to check the pressure. It's very healthy at over 220 psi; since I rebuilt the compressor recently I don't think the leak would have been there. Anyway I wanted to check the pump's output.
3) The issue is that, with the fault code cleared, or if I manually run the compressor, the system won't pressurise and raise the car; there's a leak. I've sprayed soapy water over the EAS valve block and all the air lines coming out of it but can't see any bubbles. I rebuilt that block a couple of years ago anyway so I think it's good.
Now I'm out of ideas. I'll deal with the electrical faults in time, but since the compressor runs and it is healthy, then there must be a leak somewhere.
Any ideas would, as always, be much appreciated.