In article <3F0F0E93.1A752976@cs.unc.edu>, Steve Weiss <weiss@cs.unc.edu> wrote:
>My 89 Honda Accord lxi (110,000 miles) has started to be hard to start
>on very hot days. The engine turns over just fine, but doesn't catch.
>One the third or fourth try, it will catch and run very rough for a
>couple of seconds and then be ok.
>
>Any ideas of what could be the problem?
>
>Thanks
>
>Steve

You need a main relay, it can be repaired as well.
See link.

http://techauto.tripod.com/mainrelay.htm