Cause of number 3 cylinder miss fire only when it rains but not all the time. 04 dodge durango 5.7
I do not think the rain has anything to do it with. I'd just go ahead and replace the spark plugs and coil pack. That should work.
Possibly a cracked coil or wire issue? Pull the plugs and have a look as well. Good Luck!
Use dielectric grease on the electrical connections including to the spark to boot connection.
If it has replaceable spark plug wires replace them too. But first check for good connections on all the electrical connections.
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