On a 1996 Ford Explorer , 4.0 liter V6 engine :
The spark plugs are installed in the engine cylinder heads
( you can see where the spark plug wires connect to the spark plugs )
firewall
#3 - #6
#2 - #5
#1 - #4
front of vehicle
Obviously- the spark plugs were not the issue :)
( 8 spark plugs ) for your 4.6 liter V8 engine in a 2002 Ford Explorer
For a 1997 Ford Explorer 4.0 liter V6 engine ( EFI and SOHC versions ) ( There are 6 spark plugs )
For a 2001 Ford Explorer Sport Trac : There are ( 6 spark plugs ) for your 4.0 liter V6 engine
you have to take the plastic off the top of the moter and the spark plugs are under all that stuff i know it sucks but you can have the shop change them for a few hundred
Make sure you are using Ford OEM (Motorcraft is not always OEM) Spark Plugs that are designed for you explorer.
Screwed into the heads.
If your Explorer has ac, you have to remove the passenger side front wheel and then the wheel well flap. The job of replacing the spark plugs will then be much easier. Sounds like a lot of trouble, but well worth it.
The spark plugs on a Ford Explorer are replaced by first disconnecting the battery. Remove the spark plug using a spark plug socket. Replace with the factory recommended spark plug.
The spark plug gap for the 5.0 L - V8 engine - in a 1999 Ford Explorer is ( .052 - .056 inch )
six ( 6 )
thanks