2016 Mazda CX-5 GT AWD w/Tech Pkg
- Plano, Texas, USA
Good point! Why there’re 4 wires if the spark plug has no other functions such as ion sensing than just firing?Mazda would not be the first and might be the last to use spark plugs as a combustion chamber sensor. Since coil on plug systems came into use that has been possible. Why else would the coil have 4 connectors when it need a 2 to fire? For that reason, I'd be a little slow to change types.