Classic/Antique Car Repair: points, point gap, condensors


Question
hello, i hope you can answer this one.  I have a fairly good knowledge of classic autos but ive been workn on a truck thats got me stumped.  The truck is a 1970 f100 with a 360 engine and c-6 trans, its still got the original points ignition and i cant get it to stop burning the points up.  Ive replaced the coil with a brand new one but it still fried the points in less than one minute, so i got a resistor and put it in before the coil, that didnt help so i moved it to the wire leading from the coil to the distributer, but again in less than a min the points fried again, its been through bout 5 sets of points and 3 condensors now, ive never seen ne thing do this, have you?

Answer
Hi Wayne:

Are you setting the points correctly? Are you familiar with how to properly set the points? If not, that would be your problem.

Getting the best gap between the points is essential for proper engine performance and reliability. Set the points too wide and the spark plugs don't get enough juice. Set them too close and the engine works fine for awhile until the points are burnt beyond use.

Most cars have a point gap of about 0.019", or the thickness of a matchbook. Some were set higher or lower so check your manual to be sure. To measure the point gap, you need a set of feeler gauges.