Ford V6
firewall
3 - 6
2 - 5
1 - 4
front
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Ford V8
firewall
4 - 8
3 - 7
2 - 6
1 - 5
front
sparkplug placement for 97 f150 4.6
passenger side of engine , front cylinder
With a Spark plug gap tool :)
0.060in
The spark plug firing order for the 300 cubic inch straight six cylinder ( 4.9 L ) is ( 1 - 5 - 3 - 6 - 2 - 4 ) The spark plug firing order for the 4.2 L V6 engine used in the 1997 F150 is ( 1 - 4 - 2 - 5 - 3 - 6 )
By taking the spark plug wire off, and then using a spark plug socket with a ratchet and extension. It's not rocket science.
in the block...
45
.050
.060
with a spark plug #5224 the gap setting is .040
0.51