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1,3,2,4 that is the firing order.
Knowing the firing order can help a person troubleshoot engine problems. The firing order for a 1991 Geo Metro is 1-3-4-2.
It is 1-3-4-2 and the dist turns counterclockwise and #1 is on the pass end of the engine.
Engine Should Be A 3 Cylinder 1.0 With The Firing Order Stamped In The Manifold. 1-3-2 Counter Clockwise Rotation On Distributor.
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.
1-3-4-2. If you are looking at the distributor cap from the driver side of the engine, the rotor goes counterclockwise.
1342
1-3-4-2
1-3-4-2
1-4-3-2
1-3-4-2
1-3-4-2