Econoline E350 1 Ton V8-5.4L Prop SOHC VIN Z (1998)
3. Remove the LH spark plugs.
4. Inspect the spark plugs for:
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Deposits bridging spark plug gap (A).
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Wet black deposits (oil fouling) (B).
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Dry black deposits (carbon fouling) (C).
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Overheating (D).
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Deposits fused on spark plug (E).
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Pre-ignition damage (F).
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Normal spark plug (G).
5. Adjust the spark plug as required.
