The engine cylinder locations are numbered :
firewall
3 - 6
2 - 5
1 - 4
front
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The firing order is 1 - 4 - 2 - 5 - 3 - 6
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The coil pack towers are numbered :
coil---3---4
pack--2---6
plug---1---5
The diagram.
( 8 spark plugs ) for your 4.6 liter V8 engine in a 2002 Ford Explorer
this is the proper
For a 1997 Ford Explorer 4.0 liter V6 engine ( EFI and SOHC versions ) ( There are 6 spark plugs )
coil---3---4 pack--2---6 plug---1---5 ======================================================== Engine cylinder / spark plug locations : firewall 3 - 6 2 - 5 1 - 4 front
If cylinder 3 on a Ford Explorer is misfiring, it might be possible to fix it by changing the coil pack for that cylinder. The spark plug might also need to be taken out and re-gapped or replaced. If neither of these options work, the spark plug wire can be checked.
Its prob the same as the 2.8 diagram on this link: http://media.photobucket.com/image/spark%20plug%20diagram%20chevy%203.0/roundcarly/chevy_firing_orders.jpg
( .054 inch ) according to fordparts.com
look online.
coil---3---4 pack--2---6 plug---1---5 =========================================================== The spark plug firing order is ( 1 - 4 - 2 - 5 - 3 - 6 ) ============================================================ The engine cylinder / spark plug locations are numbered : firewall 3 - 6 2 - 5 1 - 4 front
On the cylinder heads between the valve cover and intake manifold
Some auto parts retail websites have spark plug wiring diagrams. One of them, AutoZone, shows the spark plug wiring diagram for the 1993 Ford Tempo 3.0 liter 6-cylinder model.