I'm not a Ford owner so could someone tell me why there are 8 sparkplugs in the 4cyl engine in my buddies Ranger???? I think it's a 2.3L EFI motor.

 

duhhhh to burn the extra gas fumes up..... well Im not sure but i had a 93 4 cyl mustang that had the same motor great gas mileage(was in 95) I drove it like a devil for 3 years replace 2 clutces but never had no problems out of the motor.I miss that old gas saver these days......

 

yes you are right its to make more horsepower without using more gas, but now they have better fuel injection systems and way better spark plugs

 

leave it to ford to make leading and most advanced technology of all time lol

 

right side fires on compression[normal ignition] left side fires on exhaust stroke to clean up emmissions. cleaner air, no more power, no more mileage.

 

The plugs fire first on the intake side and then a few degrees later on the exhaust side for a longer spark.

 

Both plugs fire on the power stroke. Goal was a stronger wave front to create more power during combustion.