Are you certain the plug wires are run to the correct plugs in 1-2-4-3 order coming off the distributor? If you can get it running and idling again, pull off one plug wire at a time and confirm that each one is firing. She may not be "firing on all cylinders," so to speak.
Is the exhaust free and clear, ie, not blocked with failing hose internals or a kink? The engine could be choking on its exhaust, which can get worse on loading (ie putting it into gear).
Are the advance weights and springs free to move smoothly underneath the distributor?
|