I understand that when the engine is off then the compressor will not run to pump it back up but surely if it is a leak then it would drop when it is parked on the drive. It has just been left for 5 days and the suspension did not drop until I drove it then parked on a down hill slope. I had...

Ah - so for springs read air bags! I don't think the problem is leaking air bags/springs as the suspension does not drop over time. The only time that the suspension drops is when over loaded/stand on the tail gate or parked on a down hill slope. Of course I could be wrong, not being even a...

Please excuse the ignorance but I am a complete novice when it comes to cars! Which springs are you referring to? and is the fact that they have become porus a possible cause of the problem?:confused:

I have a Disco TD5 1999 model. If it is parked on a hill with the rear down or extra weight is put in the back (either in the boot or by standing on the tail gate) the rear of the car drops completely on it's suspension. When you start the car it rises up back to normal height and is ok when...