http://www.Ford-trucks.com/article/idx/0/100/article/How_To_Change_Spark_Plugs_on_46__54_Liter_F150s.html
No spark plugs on a diesel
There is no such thing as a 2001 f250 351 Windsor. I believe the last year of the 351 overhead valve motor was 1996.
Start by changing the spark plugs
disconect the coil and remove the 7mm bolt that holds down the coil, remove the coil then plug.
2001 Ford Truck F250 Super Duty P/U 2WD 5.4L EFI 8cylThe Spark Plug Gap.054 (In thousandths of an inch)
Ford uses Motorcraft Spark plugs on all there vehicles.
Check the Vehicle Emission Control Information ( VECI ) decal located in the front of the engine compartment . It will show what type of spark plugs to use and the spark plug gap
Does it have spark, fuel, compression?
Check the Vehicle Emissions Control Information ( VECI ) decal located in the front of your engine compartment ( it will show the type of spark plugs to use and the spark plug gap )
Check the Vehicle Emission Control Information ( VECI ) decallocated in the front of your engine compartment ( it will show thetype of spark plugs to use and the spark plug gap )
Check the Vehicle Emission Control Information ( VECI ) decal located in the front of your engine compartment ( it will show the type of spark plugs to use and the spark plug gap )
are under the coil that is held down by the 7mm bolt. the round black things.