Finally getting around to my plugs - hope it solves my problems

Well after being really lazy about it, I'm going to change my plugs and wires this weekend. It hasn't been done since I got the car at 107k and it now has 150k on it. It's a 95 Legacy btw.

I have having CEL issues whenever I try to start the car after a rainfall and always assumed O2 sensor, which it may be also, but I don't get any CEL on nice, bright sunny days. I did some research and come up with the following:

Car won't start in damp or rainy weather:

It's been raining for a while or it's early morning and the dew is on the grass. Maybe you drove through a big puddle and the engine died.

Possible causes:

1. Bad distributor cap : Replace distributor cap.
    
   
2. Bad spark plug wires : Replace spark plug wires.
    
   
3. The inside of the distributor cap is wet: Remove distributor cap and dry with paper towels.
    
    
   

Hopefully this will solve my problem. I know I should get the codes read, but like I said, I'm lazy and my work schedule makes it difficult.

Oh well - wish me luck!!!