The diagram is different then diagram shown 1 2 and 3 is in the back of the engine and it goes 4 6and 5 in the front but where order on the engine

For the 1997 Mercury Mountaineer V8 5.0L Engine:

Firing Order:
1-3-7-2-6-5-4-8

Cylinders:
.......(back)......
|..4..|........|..8..|
|..3..|........|..7..|
|..2..|........|..6..|
|..1..|........|..5..|
.......(front)

Ignition Coil Connections:
(back)........(back)
|.4..7.|........|.3..5.|
|.8..2.|........|.6..1.|
(front)........(front)

Let me know if this helped, or if you have additional information or questions. Feel Free to contact me at FixYa.com!

For the 2.8L DOHC V-6 (AAA) & (AFP)

Firing Order:
1-5-3-6-2-4

Cylinders:
(back of engine)
1........3........5
....2.........4........6
(front of engine)

Ignition Connections:
(back)
|.2..5.|
|.4..3.|
|.6..1.|
(front)

For the 2.8L DOHC V-6 (AHA)
Firing Order:
1-4-3-6-2-5

Cylinders:
(back of engine)
3-------------6
2-------------5
1-------------4
(front of engine)

Ignition Connections:
..........(back)..
3---->|_______|<-----5
........________
2---->|_______|<-----4
........________
1---->|_______|<-----6
..........(front)

Let me know if this helped....

I do not know if you have the 3.4L or 3.8L Engine; however, I have included both below:

For the 3.8L V6:
Firing Order:
1-6-5-4-3-2
Cylinders:
(back of engine)
2------4------6
1------3------5
(front of engine)
Ignition Connections:
(back)
o <----6
o <----3
___
o <----2
o <----5
___
o <----4
o <----1
(front)

For the 3.4L:
Firing Order:
1-2-3-4-5-6
Cylinders:
(back of engine)
2-----------1
4-----------3
6-----------5
(front of engine)
Ignition Connections:
.........(back)
.|.5..2.|.|.3..6.|.|4..1.|
.........(front)

Let me know if this helped....

I'm not sure if you have a Cherokee or Grand Cherokee or what size Engine (2.5L, 4.0L or 5.2L). I have included all three below.

For the 2.5L
Firing Order:
1-3-4-2
Cylinders:
(back of engine)
......4
......3
......2
......1
Distributor:
(back)
.....3
1.......4
.....2
(front)
For the 4.0L:
Firing Order:
1-5-3-6-2-4
Cylinders
(back of engine)
.......6
.......5
.......4
.......3
.......2
.......1
(front of engine)
Distributor:
...(back)
....5...3
1...........6
....4...2
...(front)

For the 5.2L:
Firing Order:
1-8-4-3-6-5-7-2
Cylinders:
(back of engine)
8............7
6............5
4............3
2............1
(front of engine)
Distributor:
(back)
.........3
...4.........6
8...............5
...1.........7
.........2
(front)

Let me know if this helped or if you have additional information or questions. Feel free to contact me at FixYa.com!

My apologies for the delayed response.
I am going back to answer - unanswered questions. I have only been on this site for the past 4-months. Questions Posted have exploded (+55%) since joining.
I do not know if you still need this information, but I am answering it either way.

I also do not know if you have the 4.9L, 5.0L, 5.8L or 7.5L Engine; however I have included ALL of the them below:

For the 4.9L
Firing Order:
1-5-3-6-2-4
Cylinders:
(back of engine)
.........6
.........5
.........4
.........3
.........2
.........1
(front of engine)
Distributor:
(back)
..........4
(+) 2.........1
..6...............(+)-screw
................5
........3

For the 5.0L AND 7.5L:
Firing Order:
1-5-4-2-6-3-7-8
Cylinders:
(back of engine)
4-----------8
3-----------7
2-----------6
1-----------5
(front of engine)
Distributor:
.......(back)
...(+)-screw
.........5
...4...........1
2................8
...6...........7
.........3
................(+)-screw
.......(front)

For the 5.8L:
Firing Order:
1-3-7-2-6-5-4-8
Cylinders:
(back of engine)
4-----------8
3-----------7
2-----------6
1-----------5
Distributor:
.....(back)
(+).3.....1
7...............8
2...............4
.....6.....5..(+)-screw
.....(front)

Let me know if this helped, or if you have additional information or questions. Feel Free to contact me at FixYa.com!

You didn't post your engine size so please pick the applicable diagram:



1996-98 4.3L Engines Firing Order: 1-6-5-4-3-2Distributor Rotation: Clockwise



1996-98 5.0L, 5.7L and 7.4L Engines Firing Order: 1-8-4-3-6-5-7-2Distributor Rotation: Clockwise




4.3L Engines Firing order: 1-6-5-4-3-2 Distributor rotation: Clockwise



4.8L, 5.3L and 6.0L Engines Firing order: 1-8-7-2-6-5-4-3 Distributorless ignition system (one coil on each cylinder)



5.0L, 5.7L and 7.4L Engines Firing order: 1-8-4-3-6-5-7-2 Distributor rotation: Clockwise

Firing order is 1-3-7-2-6-5-4-8 Passenger side of engine starting at front and going back is 1-2-3-4 Driver's side starting at front going back is 5-6-7-8.




Hope this help (remember rated trhis help).

I do not know if you have the 1.8L, 2.0L, or 2.8L; however I have included all three below.

For the 1.8L AND 2.0L:
Fire Order:
1-3-4-2
Cylinders:
.......(back)
1.....2......3......4
......(front)
Distributor:
....(back)
(+)..1
2.........3
......4..(+)-screw
...(front)

For the 2.8L:
Firing Order:
1-5-3-6-2-4
Cylinders:
........(back)
1.......3........5
....2........4........6 (bank offset)
........(front)
Ignition Coil Connections:
(back)
2...5
4...3
6...1

Ford V6's - rear bank of cylinders are 1 - 2 - 3. Front bank are 4 - 5 - 6 starting from passenger side (front) of engine.
Your firing order is
1 - 4 - 2 - 5 - 3 - 6

You're welcome.

Since you didn't state whether it is a V6 or V8, I'll give you both.

V6 -4.3Liter
Firing Order is 1-6-5-4-3-2
Distributor rotor turns Clockwise
Number 1 spark plug tower on distributor cap, faces the front of the engine.

->Drivers side, spark plug order in engine, starting from the Front going back:
1-3-5
->Passenger side, spark plug order in engine,
starting from the Front going back:
2-4-6

If it's Electronic, the distributor cap has a Left side, (Drivers side), and a Right side, (Passenger side)
Starting from the Front, going back on the Left side,
3-1-5
Starting from the Front going back on the Right side,
2-4-6

V8-5.0, 5.7, and 7.4Liter
Firing Order is 1-8-4-3-6-5-7-2
Distributor rotor turns Clockwise
Number 1 spark plug tower on distributor cap,
faces Front, towards the Drivers side.

Electronic distributor cap has two sides. Drivers, (Left), side and Passenger, (Right), side.
Starting from Front going back on Drivers side,
1-7-3-5
Starting from Front going back on Passenger side,
8-2-4-6

Spark plug order in engine, starting from Front going back, Drivers side:
1-3-5-7
Spark plug order in engine, starting from Front going back, Passenger side:
2-4-6-8