FORD F-150 SPARK PLUG GAP

Engine Mechanical Problem 1991 Ford F150 6 Cyl Two Wheel Drive Manual I Need To Know The Spark Gap And Firing Order. Thanks For Your...

What Is The Correct Plug Gap For This Truck? The Label On The Vehicle States 44-46 But The Parts Clerk Says The Gap Is 54.

Last Tune Up Was 100,000 Miles Ago. I Have Replaced The Spark Plugs And Wires With The Exact Same Part Number As Before. Now It Runs Worse...