Disconnect the battery, remove the cables and boots, and remove the old spark plugs. Put in the new spark plugs, attach the cables and boots, and connect the battery.
The Ford 4.0 liter V6 engine has ( 6 spark plugs )
On a 2002 Ford Ranger : The 2.3 liter Dual Over Head Cam four cylinder engine has ( 4 spark plugs )
The 2.3 liter 4 cylinder engine has ( 8 spark plugs ) , twin plug ignition system The 2.9 liter and 4.0 liter V6 engines have ( 6 spark plugs )
The 3.0 liter and 4.0 liter V6 engines have ( 6 ) spark plugs The 2.5 liter 4 cylinder engine has ( 8 ) spark plugs with Fords twin plug ignition system
Yes ( the 2.3 liter in the Ford Ranger from 1989 to 1997 has 8 spark plugs ) and the 2.5 liter from 1998 to 2001 also has 8 spark plugs
There are ( 6 spark plugs ) on the Ford 4.0 liter V6 engine
On a 2005 Ford Ranger : The 2.3 liter Dual Over Head Cam , four cylinder engine has : ( 4 spark plugs )
The 2.5 liter 4 cylinder takes ( 8 ) spark plugs , with Fords twin plug ignition system The 3.0 and 4.0 liter V6 engines each take ( 6 ) spark plugs
( 8 spark plugs ) for your 2001 Ford Ranger 2.5 liter 4 cylinder ( with Fords twin plug ignition system )
On a 2002 Ford Ranger : Check the Vehicle Emissions Control Information ( VECI ) decal in the front of your engine compartment . It will show the type of spark plugs used and the spark plug gap
The 2.3 liter in the Ford Ranger from 1989 to 1997 and the 2.5 liter from 1998 to 2001 use ( 8 ) spark plugs
i think they are back up plugs for the fout that run the truck normally