My '86 Prelude did the same thing, the problem was that the fuel pump
was'nt always starting, not getting any current from the relay - it would
only happen when it was hot out. I just ran a hot wire from my battery to
the pump and mounted a small toggle switch in the dash, now if it won't
start I flip the switch and she starts right up. Maybe not the right way
to repair it but it's worked for years ! Matt