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On a 1997 Ford Explorer ( 4.0 liter OHV and SOHC , V6 engines )

( 1 - 4 - 2 - 5 - 3 - 6 ) is the spark plug firing order

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The engine cylinder locations are numbered :

firewall

3 - 6

2 - 5

1 - 4

front of Ford Explorer ( V6 )

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The towers on the coil pack are numbered :

Coil-----3 - 4

Pack----2 - 6

Plug----1 - 5

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12y ago

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