Look here: http://autorepair.about.com/library/firing_orders/bl-fo-11352.htm Basiclly the sparkplugs fire front then back. The plugs fire at the same time
1342
firing order is 1, 3, 4, 2 for a 86' B2000
1,3,4,2 Number one is at timing cover closest to the distributor.
1986 Pontiac Firebird 2.8 Liter Firing Order
#1 is front cylinder, distributor rotates clockwise, firing order is 1342, timing is 6 btdc
The firing order for a 2.0 L. is 1423.
The firing order is 1-3-4-2
1342
The firing order on a 1986 Chevrolet Celebrity V6 is: 1-2-3-4-5-6.
order is 1,3,4,2
1,8,4,3,6,5,7,2
1324