what is the firing order
what order does the sparkplugs go for the firing order
1-5-3-6-2-4 for the 4.9 6, Endi ... 1-5-4-2-6-3-7-8 for the 5.0 V8 ... 1-3-7-2-6-5-4-8 for the 5.8 V8 ... Hope that helps!
Dear endi2100- The order for that 4.9L engine on your 1991 Ford F150 is as follows- 1-5-3-6-2-4. The distributor rotation is clockwise. Just a hint- replace the wires one at a time. It's a real mess if you get them all mixed up. Good luck from Boavan.