hi guys , just replaced a new airbag on the rear of my p38 RR ( 98 reg ) as it was leaking , it rises when first started but seems to drop overnight , parked on a flat surface , could the lines be leaking , need to get it sorted as i want to put on bigger wheels ( would it make a difference ? ) Newbie to owning a RR appreciate your help !!!!

 

Open hood after you get home and shut the truck off, listen for the sound off air escaping ( this is a suggestion) I saw one with same symptoms and that is what I heard after opening the hood.

 

You are correct in thinking that the lines may be leaking. I would turn the vehicle on with all doors closed and spray some soapy water on the lines where the connect with the collets on the airbags. Be sure to check both sides (not just the one you replaced b/c if one is leaking it wall fall). If it bubbles the connection between the o-rings,collet, and line is bad. Try pushing it in some more or cutting off the tip of the tubing if it looks like it is damaged where it goes intot he o-rings and collet. Also could try some lithium grease on the o-rings and collet to make a better connection with the tubing.

If you hear leaking from under the bonnet then you probably have a problem with your valve block.

Pray that one of those is the problem b/c if not it could be a problem with the height sensors. If so you can try swapping the sensors from one side to the other.