According to my Chilton repair manual the spark plug gap should be .054 This applies to the 4.0 L OHV, the 4.0 L SOHC, and the 5.0 L V8
For a 1997 Ford Explorer 4.0 liter V6 engine ( EFI and SOHC versions ) ( There are 6 spark plugs )
.054 inch
.052"-.056"
.054 inch ( V6 and V8 , according to ford parts . com )
.054 inch for your 4.0 L OHV engine
because it's a 1997 ford explorer
Use a code scanner to see what the computer says is wrong.
www . motorcraft . com ( no spaces ) shows ( .044 inch ) spark plug gap for the 4 cylinder and V6 engines in a 1997 Ford Probe
.054 inch , according to motorcraft.com , one of Fords websites
The spark plug gap for a 1998 Ford Explorer (V6 and V8 engines) is .054"
The spark plugs on a Ford Explorer are replaced by first disconnecting the battery. Remove the spark plug using a spark plug socket. Replace with the factory recommended spark plug.
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