'85 Spider: difficult cold starts on hot days

[Fred Schwab <fschwab@domain.elided>]

     Cold starts, on hot days after my '85 Bosch FI Spider has been
sitting in the sun, are difficult.  It seems like there must be either a
vapor-lock problem, or that the gizmo (a thermo-vaccuum switch?) that
controls the cold-start injector gets fooled by the warm temperatures
under the hood.  Where, and what, is this gizmo?

     Starting when the engine is warmed up is never a problem,
and cold starts in cool or frigid weather are no problem.

     Any advice?

                                     - Fred Schwab (fschwab@domain.elided)
                                       Charlottesville, Virginia

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