It's perhaps unfortunate the big Citroens had a downside, and that was an unsubtle combination of amateurish engineering, penny-pinching, and appaling lack of rust protection. These cars almost rotted away before your very eyes. The complicated hydraulic system where brakes, steering and suspension were all run off the same system used plain steel pipework which developed holes due to rust inside a very few years. So one could be happily driving on the motorway when a big red sign lit up in front of you saying "stop immediately". When you tried, you discovered -- no brakes.

To be fair, at the time (1950s and 60s) many cars were simple rot-boxes, not intended to last more than 5 years or so. The only real exception was Mercedes, who did pay some attention to body protection. Hence their high second-hand value then. I'm afraid Jaguars weren't particularly good then either, only making real body-protection improvements when Ford came along.
Leedsman.

Thanks for the link. I already ordered the springs but I may keep the old ones depending on the price to ship them back to Arnott. They suggested I use Canada Post as it's the cheapest way, it doesn't help that they are on strike right now.

I ordered the springs on Friday and I just received an email from UPS that they will arrive tomorrow before noon, man that's quick. I have to shop around for a mechanic that will install them for me. I would attempt the work myself but my neighbors like to hang around and give me their two cents which drives me nuts. I'm looking forward to getting behind the wheel again especially now the my Crown Vic's steering is actin up

I know this thread is a few month's old..
The best way I have found to source out a air leak is a bottle of soapy water.
just follow the line's and spray them down with it and spray the air shock's as well then start the car and let system pressure get to normal and shut it down and look for bubble's. even a very small leak will produce bubble's..

I ended up pulling the air lines from the springs one at a time to determine first if the air pressure was there and to see which spring would or wouldn't inflate. I found that the right side was leaking very bad (wouldn't lift at all) so I ordered the two replacements. Arnott sent the springs within 2-1/2 business days which impressed me and I had a mechanic do the work today. He told me it was more of a pain then most vehicles that he has worked on but I'm glad I had him do the work as he had the proper tools. He charged me $300 labor which I thought was reasonable as most were asking $400-$500, I'm just happy she is back on the road