I was investigating the loss of vacuum after 2 or 3 presses of the brake pedal. So I took a look at the vacuum reservoir and it's pipes. I didn't like the way the pipes had been run, and the length of the pipe used to link the reservoir to the main vacuum rail. I gave the pipe at one end a gentle pull and it came away. Unfortunately it came away with the plastic pipe connector.
Looking closer at the broken connection, leaves me to believe that it's been cracked for a while. There is definitely a discoloration on one side of the pipe, which would explain why the vacuum was depleting so rapidly.
View attachment 153345
So I had to come up with a quick fix, so cobbled together a short length of brake pipe, a 4.8mm drill and some epoxy resin. I drilled out the hole to 4.8mm and cleaned a 30mm length of 3/16 copper pipe. I then mixed up a few ml of epoxy and glued the pipe in.
View attachment 153347 I waited 15 minutes for the glue to go off and refitted the reservoir to the engine. On testing, the servo now boosts as many times as is needed and sinks the moment the engine is started. So it looks like that little glue based mod has worked.