Ranger 2WD L4-153 2.5L SOHC VIN C SFI (1998)
Spark Plug: Specifications
Torque
Spark Plug Gap ...................................................................................................................................................................... 1.07-1.17 mm (0.042-0.046 in)
Spark Plug Torque ............................................................................................................................................................................. 9-20 Nm (80-132 lb in)