Maybe a longshot, but while studying the Bosch fuel injection book I read
that the fuel pressure system is designed to maintain adequate pressure for
some time after the engine is turned off to aid in warm or hot re-start.
Could be your fuel pressure regulator, fuel pump, or merely a fuel line or
connection of them, including at the injectors, is a bit leaky.  There is a
test in the Bentley and the Haynes to see if the system is maintaining
pressure (mine is not and I am preparing to replace lines & parts).  But I
imagine it could be something else instead.

Jim Creech
87 Westy GL, 2.1

> <snip.  Runs great and drives great.  I drive somewhere (whether its
driving
> it for 5 minutes or 45 minutes), I stop and leave it.  I come back,
perhaps,
> 20-30 minutes later, it doesn't want to start.  I have to keep either
> cranking on it or start then wait, start then wait.