We own a 93 Toyota Corolla. We've had it for a little more than a year. After about 6 or 7 months it wouldn't start in the rain.
We also own a Ford Truck that wouldn't start in the rain (put a ton of money into it replacing things that might've caused a problem). Eventually someone told us that there might be water in the fuel line and to try some HEET in the gas tank. That solved the problem in the truck.
SO. When this started in the Corolla, we tried the HEET. It worked TWICE. And now it won't start in the rain again. Called the Toyota dealership about it and they said they " didn't want it.&Quot; Somebody help us.
Your problem is probably due to moisture getting into the ignition system. Do a thorough inspection of the entire system including all of the following; 1) ignition wires. Visually inspect the wires for cracks, abrasions and discoloration. If you have a ohm meter check the resistance of the wire and make sure they are within specs for your car. Any signs of wear replace wires. Don't forget to check the coil wire also.
2)Check the cap and rotor for signs of moisture getting into them. Look for green mold or corosion inside the cap and on the rotor. Also check cap for any cracks.
3) check the connections to the ignition coil. Make sure they are tight and clean.