Posted by Asker for a 1997 Ford F250 under the 1985 Ford 250 Category.
I have included BOTH the 1985 and 1997 F250 351cid=5.8L Firing Orders below...
1985 Ford F250 351CI = 5.8L V8:
Firing Order:
1-3-7-2-6-5-4-8
Cylinders:
........(back)........
|..4..|........|..8..|
|..3..|........|..7..|
|..2..|........|..6..|
|..1..|........|..5..|
.......(front)
Distributor:
....(back)
[X].3...1
7............8
2............4
.....6...5.[X]-clip
....(front)
For the 1997 Ford F250 351CI = 5.8L V8:
Firing Order:
1-5-4-2-6-3-7-8
Cylinders:
........(back).......
|..4..|........|..8..|
|..3..|........|..7..|
|..2..|........|..6..|
|..1..|........|..5..|
.......(front)
Distributor:
.....(back)
[X].5...1
4............8
2............7
.....6...3.[X]-clip
.....(front)
Let me know if this helped, or if you have additional information or questions. Feel Free to contact me at FixYa.com!
SOURCE: i need a firing order diagram for 1997 f250 351
For the 1997 Ford F250 5.8L = 351:
Firing Order:
1-5-4-2-6-3-7-8
Cylinders:
...(back)
4...........8
3...........7
2...........6
1...........5
...(front)
Distributor:
....(back)
(+).5....1
4.............8
2.............7
....6....3..(+)-screw
....(front)
Let me know if helped, or if you have additional information or questions. Feel Free to contact me at FixYa.com!
The firing order is ( 1 - 3 - 7 - 2 - 6 - 5 - 4 - 8 )
The distributor rotor turns COUNTERCLOCKWISE
The marked # 1 position on the distrubutor cap faces to the REAR and slightly towards the drivers side
The engine cylinders / spark plug locations are numbered :
firewall
4 - 8
3 - 7
2 - 6
1 - 5
front
If someone has altered the disstributer, pull #1 plug, put finger over hole, turn engine over until compression on that cyl, line up timing marks (ball park only) and rotor will be pointing at the correct terminal for #1 cylinder plug wire connection, in the cap.
Here's a mechanical blow-up of an 80's 351w engine.
and the firing order layout.3,372 views
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