02-09-2022, 11:13 PM
Remove the coil lead from the distributor cap. With the ignition switched on, hold the end of the coil lead close to the cylinder head, motor the engine on the starter and you shoild have a spark between the coll lead and cylinder head. If you get a spark, fault is in rotor arm or distributor cap [carbon brush] or plug leads.
If no spark, disconnect the low tension ignition lead from the distributor. With ignition switched on, flash the ignition lead to earth on dynamo or radiator cowl. You should get a spark from low tension lead to earth. If spark is there, fault is in the points or condenser, or earthing of the fixed contact breaker point.
If no spark from low tension lead, check ignition feed from switch to coil, low tension lead continuity from coil to distributor. If these are OK, subsitute the coil, and repeat all tests.
John
If no spark, disconnect the low tension ignition lead from the distributor. With ignition switched on, flash the ignition lead to earth on dynamo or radiator cowl. You should get a spark from low tension lead to earth. If spark is there, fault is in the points or condenser, or earthing of the fixed contact breaker point.
If no spark from low tension lead, check ignition feed from switch to coil, low tension lead continuity from coil to distributor. If these are OK, subsitute the coil, and repeat all tests.
John