1997 Ford Mustang Owner Guide 1st Printing - Page 263
1997 Ford Mustang Manual
Page 263 highlights
Capacities and Specifications Refill Capacities, Motorcraft Parts, and Lubricant Specifications Motorcraft Parts If a spark plug is removed for examination, it must be reinstalled in the same cylinder. For 3.8L engines: Cylinders #1, #2, #3 have an EG suffix. Cylinders #4, #5, #6 have an E suffix. For 4.6L (2V) engines: Cylinders #1, #2, #3, #4 have a PG suffix. Cylinders #5, #6, #7, #8 have a P suffix. If a spark plug needs to be replaced, use only spark plugs with the service number suffix letter as shown on the engine decal. 265
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Capacities and
Specifications
Refill Capacities, Motorcraft Parts,
and Lubricant Specifications
Motorcraft Parts
If a spark plug is removed for examination, it
must be reinstalled in the same cylinder.
For 3.8L engines:
Cylinders #1, #2, #3 have an EG suffix.
Cylinders #4, #5, #6 have an E suffix.
For 4.6L (2V) engines:
Cylinders #1, #2, #3, #4 have a PG suffix.
Cylinders #5, #6, #7, #8 have a P suffix.
If a spark plug needs to be replaced, use only
spark plugs with the service number suffix letter
as shown on the engine decal.