Just finished installing new motorcraft spark plugs...No change.Two of the old ones(they were 3 month old) had oil at the electrode end...... Is raining here so I did the work inside the garage, and notice that the truck is running the same 'bad", but very"very" rich.
Any ideas....
Many thanks gentleman.

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Pembroke. 1994 B2300 Base/SE Short Bed 2D 2.3L
14 MPI 4 Cylinders 8 Spark Plugs with142,000 Miles