Good sparking plugs
in 2 years
I bought these for my son's truck which was having multiple cylinder misfires. Had already replaced a faulty coil pack and wires recently and it may of caused the plugs to foul especially on the bad side of the engine it was not firing well. Replaced the plugs and the rough engine at idle stopped and check engine light went out after a couple days.
What kind of vehicle do you drive? 2005 Ford Ranger XLT