On a 1999 Ford Expedition , 5.4
The firing order is ( 1 - 3 - 7 - 2 - 6 - 5 - 4 - 8 )
The engine cylinder locations are numbered :
firewall
4 - 8
3 - 7
2 - 6
1 - 5
front of vehicle
The 5.4 has the Coil On Plug ( C.O.P. ) ignition system with ( 8 ) individual coils
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