i need th firing order for a 90 s15 gmc sierra 2.5liter 4 cyl?

[Stan]

my stupid ass dad took all the plugs out and didnt lable um and i have no clue which one goes where now. do you?

 

[Molson02536]

my stupid ass dad took all the plugs out and didnt lable um and i have no clue which one goes where now. do you?

Your firing order is 1-3-4-2
The cylinder # is 1-2-3-4 from radiator to fire wall
The distributor # from the 1 O'clock position is 1 then going clock wise is 3, 4, and then 2 at the 10 O'clock.

Hope this helps and keep us posted.