dssur
+1y
the cam pully is numbered for advancing and retarding the cam timing (thanks Ken at mazdatruckin.com). This can be proven with logic, because the cam rotates half as fast as the crank. There is a timing mark on the pulley that will line up with a mark on the pulley cover.
The firing order of a mazda is in fact 1-3-4-2 just like most production 4 cylinder engines (for balance). I have never seen a car engine with 1-2-4-3....
If you want to be absolutely sure, pull the plugs and run a stiff wire into the #1 hole so it gets pushed out as the piston comes up. Make sure to rotate the engine till the piston is at TDC AND both #1 valves are shut. With the plugs out it is easy to turn the motor.
Then you stick the dizzy in so that the rotor points at the notch on the dizzy, it may take a few tries to get it, being one tooth off can be the difference between good running and poor running. Put the cap on, and the plug wire that lines up with where the rotor is will be #1. Next will be 3, then 4, then 2