dude, get a cover on your timing belt. like yesterday or sooner..dont wanna have a rock come up from the road and put a hole in your belt and whammy all your valves.
It seems like pressurizing them would just make a leak anyway eventually.I like the idea of a vacuum test better but I cant see how you'd know where it was leaking in that way though.
I had a normal banjo bolt in the pump output, it had no restrictor. The pump was pumping full blast, pulling so much so fast; it created a vacuum that pulled the air out of suspension.