try HEI mod it should work http://www.mx-3.com/phpBB3/viewtopic.php?f=15&p=461052
To set the timing on a 1991 Mazda MX-6, first, ensure the engine is at top dead center (TDC) on the compression stroke for cylinder one. Remove the distributor cap and align the rotor with the timing mark on the distributor housing. Use a timing light to check the timing mark on the harmonic balancer against the timing scale on the engine; adjust the distributor as needed to achieve the correct timing specification. Finally, recheck the timing after tightening the distributor hold-down bolt.
It's part of the distributor
it is in ths distributor i just changed my for 80.00
To set the timing on a 1993 Mazda 2.5L engine, first, ensure the engine is at TDC (Top Dead Center) on the compression stroke for cylinder number one. Align the timing mark on the crankshaft pulley with the timing pointer on the engine. Adjust the distributor so that the rotor points to the number one cylinder terminal on the distributor cap. Finally, secure the distributor and recheck the timing with a timing light if necessary.
you need to reset the timing the distributor did not go back in correctly
To set the timing on a 1989 Mazda 626, first, ensure the engine is at top dead center (TDC) on the compression stroke for cylinder one. Use a timing light to check the timing marks on the crankshaft pulley against the timing scale on the engine. If adjustment is needed, loosen the distributor hold-down bolt and rotate the distributor until the timing light shows the correct timing. Finally, tighten the distributor bolt and recheck the timing to ensure it remains accurate.
To set the timing on a 1996 Mazda truck, first, ensure the engine is at top dead center (TDC) on the compression stroke for cylinder number one. Then, locate the timing marks on the crankshaft pulley and the timing cover; align them according to the specifications in your owner's manual. If the timing is adjustable, loosen the distributor clamp and rotate the distributor until the timing light indicates the correct timing mark. Finally, tighten the distributor clamp and recheck the timing to ensure it remains within specifications.
Number one chamber is the one closest to the distributor or crank angle sensor, number two is closest to the firewall. T is top and trailing, L is lower and leading. On the distributor cap the holes are marked L1-L2 etc.
Camshaft position sensor of Mazda Milenia 2,5L DOHC is inside ignition distributor (the same part with iggnition comutator).
#1 is front cylinder, distributor rotates clockwise, firing order is 1342, timing is 6 btdc
Number one chamber is the one closest to the distributor or crank angle sensor, number two is closest to the firewall. T is top and trailing, L is lower and leading. On the distributor cap the holes are marked L1-L2 etc.
1,3,4,2 Number one is at timing cover closest to the distributor.