It was easier for the manufactures to balance the engine, to prevent vibrations, if the firing order was 1342.
1342? 1234?
1342 if the firing order. The cylinders from radiator to firewall are marked 1234
1342 on the coil, and looking at the motor lft to rt is 1234
Firing order is 1342 - spark plugs order is 1234 from left to right
1342 it is on the distributor cap. And pistons are 1234 starting from pulley side of the engine.
firing order is 1342
the firing order is 1342
1342
1342
1342
1342 clockwise
1342