1995 Plus 8
Went to a car show Sunday. Temp in the low 80's. Bright sun. No shade. No breeze. Didn't open the bonnet all day,
Morgan sat on hot pavement from 9AM to 3:30PM. When I tried to start it to come home it would only stay running if I kept the revs up. After about 3/8 mile it cured itself and we drove home with no problem.Parked in the garage. An hour or so later started and it idled just fine.

This a problem with Morgans.

My easy fix is to open the bonnet about 1/2 hour before leaving a show, but I shouldn't have to.