I suspect a bad fuel injector(s) on my 1983 water cooled Westphalia, a
strange miss that I can't get a handle on.  I'd like to start a discussion
on the ways to diagnose and test a bad injector.  Does anyone have
experience using any of the testing systems available...I'm thinking of the
discontinued TIF Fuel Injector Testor(TIF 357EFI) that checks pressure drop
and volume drop...or any other kind of device that would provide clues.
What's the best way to check the spray pattern, has anyone built a device
that would run a suspect injector outside of the engine, in a controlled way
so the spray pattern could be studied?  I'm open to any ideas at all.

John