The 2.3 L - 4 cylinder has the twin plug ignition system - ( requires 8 spark plugs ) The 3.0 L and 4.0 L V6 engines ( require 6 spark plugs )
There are ( 6 ) spark plugs
( 4 ) for the 2002 Ford Ranger 2.3 L - DOHC engine
In a 2011 Ford Ranger : The 4.0 litre Single Over Head Cam , V6 engine has : ( 6 spark plugs )
On a 2005 Ford Ranger : The 2.3 liter Dual Over Head Cam , four cylinder engine has : ( 4 spark plugs )
( 8 spark plugs ) for your 2001 Ford Ranger 2.5 liter 4 cylinder ( with Fords twin plug ignition system )
The Ford 4.0 liter V6 engine has ( 6 spark plugs )
There are ( 6 spark plugs ) on the Ford 4.0 liter V6 engine
On a 2002 Ford Ranger : The 2.3 liter Dual Over Head Cam four cylinder engine has ( 4 spark plugs )
That's Fords twin plug ignition system , so your Ford Ranger 4 cylinder has ( 8 ) spark plugs and spark plug wires
( 8 ) sparkplugs for the 2.3 liter 4 cylinder engine in a 1997 Ford Ranger with Fords twin plug ignition system
There are many causes to this problem, in a 1999 Ford Ranger 3.0L. It is usually caused by a spark plug firing when its not suppose to, or late/delayed timing.
six ( 3.0 L V6 / 4.0 L V6 )