Where is the number 4 COIL on Mazda millenia 2.3L engine?
There is no "number 4 coil" on the Mazda Millenia 2.3L engine. Instead, the engine has two coil packs, each with two coils. The coil packs are located on the front of the engine, with one on the left side and one on the right side. Each coil pack has a connector with two wires, which connect to the spark plugs for that coil pack.