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do i need the stock 8 spark plug distributor in order to get both coils to fire on z22 ?


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30 minutes ago, 720kingkab said:

so inside the distrib cap that spacing between mazda 4 blade thing and football goal post adjustable thing is 

 0.012" to 0.020".






Dealers choice, they both fire at the same time.

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Oh so you're in California. Should put that and the year 720 in your profile. Actually you could run 5 degrees for better performance and running. 3 is unnecessarily low and is merely a California mandated requirement. Set it back to 3 for any emissions testing.

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  • 1 month later...
On 1/19/2022 at 4:20 PM, datzenmike said:



With both coils working set timing to 5 degrees before TDC at idle. If timing IS at 5 degrees then you should really notice the difference when driving.


With one coil, the burn time is lengthened, in effect the dual plug timing will be retarded and lack efficiency, performance and mileage. Bringing the second plug 'on line' will restore this.

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