1987 4.0liter Firing Order.
Happy to help. Engine model wasn't specified and there are two possibilities for 1987. Here are both:
Firing order for 1987 4.0 litre 6 cyl engines:
1 5 3 6 2 4...
For a 1992 Jeep Cherokee 4WD the firing order for a 6 cyl is as follows 153624 and the distributor rotates clockwise.
Timbo's Answer.
http://autorepair.about.com/od/enginefiringorders1/