won't start get power electronic but wont turn over

[pwspark]

i have a 2000 Dakota that misfires, backfires and won't start when it rains. the distributor is at the back of the 3.9L engine.
the weather proof gasket between the top of the firewall and under side of the hood has deteriorated to the point that water (from rain) is getting on the distributor and causing problems for spark distribution from the distributor. check and make sure there is a good water seal under the hood.