For the 1990 Oldsmobile Cutlass Ciera.
Engines 2.5L and 3.3L included below:
For the 2.5L In-Line 4-Cylinder:
Firing Order:
1-3-4-2
Cylinders:
........(back)
1......2......3.......4
........(front)
Ignition Coil Connections:
(back)
...1
...4
...2
...3
(front)
For the 3.3L V6:
Firing Order:
1-6-5-4-3-2
Cylinders:
........(back)
2.........4.........6
1.........3.........5
........(front)
Ignition Coil Connections:
(back)
__
o <--1
o <--4
__
o <--5
o <--2
__
o <--3
o <--6
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