The AC in my 83.5 Westy has a leak. It was converted to R134a a few years
ago but it never worked right. It leaks out pretty fast. Is there a way to
determine where the leak is? Also, is there some "sniffer" to make sure none
of it is leaking into the passenger area?

The irony of it all is I bought this van 8 years ago because it had AC.
Passing up shiny 87's,e etc. w/o AC at the time.....

Thanks,
Bryan