Ford 4.0 spark plug diagram

Answer 1

On the Ford 4.0 L V6 engine ( which was never used in a Ford Windstar )

Both the EFI ( which is an Over Head Valve design ) and the SOHC version

The engine cylinder locations are numbered :

firewall

3 - 6

2 - 5

1 - 4

front of vehicle

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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