[Alaska Jim]

had an electric fuel pump on my 51 Merc. when I first got it. It did nearly the same thing. when cold/cool it worked fine. finally one day it quit in traffic. reached under the car and the pump was hot to the touch. had a spare in the car so changed it in a parking lot. fired it up and drove home. after the pump had cooled down and I was back at home I ran it on the workbench and went through about 2 gallons of fuel before it got hot and seized up. after it cooled down it worked again. needless to say it went to the dump. I say change the pump.---Jim