I've a 1972 4/4 1600 and when driving for a while (say after 30 mins), the car starts to lose power and then cuts out. After 20-30mins, it will start again (with a struggle) and go for another 10-15 mins before the same happens again. I've replaced the coil a number of times, fitted an electronic fuel pump, new distributor, rotor arm and alternator, but this hasn't solved the problem. I left the car running at home for over an hour, but cannot simulate the issue, although I did not that the coil was hot. Has anyone experienced this problem and found a solution?