Help

[Stew Robertson]

The old boy needs some help!
I have a carrier that will go between 7 an 10 miles before it dies
I have converted it from the |Ford coil to the later coil and the distributor top
the coil has been replaced 3 times but always seem to have lots of spark /THINKING IT IS COIL BREAK DOWN
The condenser has been replace more time than enough/ 5
and has no spark at the plugs but let the machine cool down and it starts
maybe for one minute maybe for 10 CONDENSOR
the carrier goes between seven and ten miles and just out of the blue it quits
the carrier in question has an electric fuel pump and fuel is not a problem
This is a first for me so I was wondering if the condensors that we buy now are S*** or If the old guy just doesn't know what he is doing