Q: van went trough some snow and started running bad changed spark plug wires on 2002 Ford Windstar

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
and it still runs rough and the engine light is on
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said something like cylinder 3 misfire,changed plugs and wires,changed the misfire,no more misfire,but still runs rough,maybe intake gaskets leaking