Hello,
I drive a 94 Honda Accord DX and I am having trouble getting it to start after rain and/or sitting for a week. A year ago I had some fairly major work done, including replacement of spark plugs and boots, distributor cap/rotor/wires, battery, thermostat, radiator hoses, O2 sensor, and valve cover gasket. Less than one month ago I had the timing belts and front seals replaced, an axle shaft replaced, and some oil leaks fixed (he replaced the previously replaced distributor as it had oil build-up from one of the oil leaks and was still under warranty),and replaced a bad serpentine belt. The weather during the past week here in SoCal has been fairly dramatic (some days dry and 80 degrees, some rainy and 40 degrees). It rained and didn't get out of the 40s yesterday and I went out to start my car this afternoon when it was sunny and 60 degrees and it is cranking just fine, but won't start. A brief look into previously answered questions on several forums point to spark plug and distributor cap/rotor problems. Since mine have already been replaced I am at a bit of a loss. Can anyone help me out here? I'm not super hands-on, but my auto knowledge is better than most people who don't do their own automotive work. Any help is greatly appreciated! (Sorry for being such a long question.)
Thanks,
Megan

There is suppose to be an O-ring on the distributor housing, where the distributor cap seals. Verify that it is there and that it's in good shape. Best to coat it with silicone grease. This is a common problem when Hondas don't start in wet weather.

A fact of life with Hondas is that aftermarket distributors are problematic. Over 50% of new aftermarket distributors at AMHD don't work--the rest are often unreliable. I only recommend genuine Honda distributor housings, where it's fine to install an aftermarket igniter and coil to keep the cost down. Focus on the distributor, if the Check Engine Light consistently comes on for 2 seconds and then goes out, when the ignition switch is turned to ON (Position II).

Thanks for the quick response. I'll have to take it in and make my mechanic check for it. While I was posting the original question I had the hood open to let it air out and the car started on the first crank after about 30 minutes of dry time. I suspect you are correct about water somehow getting in there. I appreciate it!
Megan

Also, carefully wipe down each spark plug wire with a clean cloth and silicone spray. This will help seal the wires and prevent moisture penetration. Keep the silicone spray away, however, from the oxygen sensors--it's the kiss of death.