13B 3 coil?
10-08-08, 08:53 PM
#1
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13B 3 coil?
What engines are the 13B 3 Coil? I was checking out the Base Maps on an EMS 8860 today and it has one for a Mazda 13B 3 coil? The car i am looking at is a 1987 13B, that i assume has 2 Coils Am i right? Can someone straighten me out?
10-08-08, 11:34 PM
#2
All rotaries have 4 spark plugs
2 Trailing (TOP)
2 Leading (LOWER)
The Leading are waste spark type, both plugs fire at the same time, so there is only one coil.
The Trailing fire independently so there is two coils
for a total of 3 coils for a stock 13B
2 Trailing (TOP)
2 Leading (LOWER)
The Leading are waste spark type, both plugs fire at the same time, so there is only one coil.
The Trailing fire independently so there is two coils
for a total of 3 coils for a stock 13B
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