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Go to Google.com and type in the words "1990 Geo Tracker firing order" and it will get you to a site that will tell you.
Which engine?
i am looking for a diagram of the firing order in a 1997 Chevy s10 blazer 4x4.
For a 1990 Chevy S10 2.5L engine the firing order is: 1-3-4-2 . The distributor rotates clockwise.
it should be 1-3-4-2
The firing order for a 1990 Chevy Cavalier 2.2 is 1-3-4-2. The number one cylinder is closest to the front of the engine.
18436572
18436572 clockwise
1, 6, 5, 4, 3, 2.
Need to know what size engine.
1, 3, 4, 2.
The firing order for a 1990 Chevy Cheyenne with a V8 engine is typically 1-8-4-3-6-5-7-2. This order is standard for small block Chevy engines. Always refer to the specific engine type and configuration for confirmation, as variations may exist.