94 Previa - heavy rain - high humidity - won't start

[edcutah]

94 Prev parked outside. Never had a starting problem. This morning, heavy heavy rains on west coast, very high humidity. Went to start the Prev - no go. Tried cranking three times. Start works. 1 misfire. Then not a hint. For moment letting it sit. There is not going to be sun until tomorrow, with intermittent heavy showers and high humidity. There is water on the battery, around the MAF. Hard to tell how much water and where it may have trickled. I'm hopeful the high humidity or a little water egress is messing with the ignition. So igniter? distributor? and what about fuel pump electrical connections. On a could engine, can the ambient humidity suppress spark?

Like I said, my plan of action at moment is to let it sit, but... What component(s) is/are most likely shot, shorted, ie permanently damaged? and could someone outline a diagnostic course of action. Thank you kind Previa tribe.

[Gaberrock]

I had this exact same problem on my Previa. The problem is the distributor cap, but it's best to just replace all the tune-up components (spark plugs, plug wires, rotor) while you're in there. After I did that, my car had no problems starting in rain and high humidity.

[gshadow32]

likely the didtributor cap seal was not installed. that was my problem too. so i went in and changed everyting from valve cover seal, distributor cseal, cap, rotor, plugs, wires. right after that i did 18000 miles in 8 months