I replaced the plugs and wires on the 500E today. Everything went smooth, but I had a question.

The plugs were in good shape, electrodes were clean. Each plug I removed had a strong gasoline odor, to the point I am wondering if the engine is running too rich. Idle is smooth, no rough idle. Car seems to run strong. No smoke from the exhaust. Any ideas? Could it be I need a new O2 sensor?

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Gary
1992 500E
1995 Impala SS
2000 C5 Hardtop
2006 Hummer H3
G Man's Rides