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On a 1990 Mercury Grand Marquis :

With the 5.0 litre / 302 cubic inch V8 :

( 1 - 5 - 4 - 2 - 6 - 3 - 7 - 8 )

With the 5.8 litre / 351 cubic inch V8

( 1 - 3 - 7 - 2 - 6 - 5 - 4 - 8 )

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On both engines :

The distributor rotor turns COUNTERCLOCKWISE

The marked # 1 position on the distributor cap faces towards the REAR

The engine cylinder locations are numbered :

firewall

4 - 8

3 - 7

2 - 6

1 - 5

front of vehicle

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Q: What is the firing order for a 1990 ford grand marquis?
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