Engine problems

Have you done a compresson test on the motor. If not do one and see if the 2 cylinders you are having problems have good pressure. Remove all the plugs and check each cylinder with a compression tester. I suspected that the 2 cylinders that are not working properly have bad values. You can confirm this if the compression results for the 2 cylinders are bad by doingh a wet test on them. Take 2 to 3 table spoon of motor oil and pour it into the cylinder through the spark plug hole. Then repeat the test for the two bad cylinders. If the compression results go up then the rings are bad. (This is usually accompanied by oil fouled plugs) If the 2 cylinders are next to each other I would then suspect the head gasket is bad. A compression test is probably a good gauge to tell the condition of the internal parts of the motor. (RINGS, VALUES and HEAD GASKETS) Good luck Backyardmechanic :roll:

It may be something as simply as a basic tune up. Try changing the points cap and rotor while you are at it. Also check the dwell and make sure it is correct. I'am assuming you still have the original distrubutor in the car. Can't remember the last time I adjusted or change a set of points LOL. Hope this helps :)

You could have very simple problems. I would suspect wires, distributor cap and/or plugs themselves but start at the distributor cap then the wires and down to the plugs.