greetings from canada greenvarmint,
here in Vancouver where it rains way too much, we have no reports of SV's with plug problems in the rain. I think you should get your dealer involved- a 2003 should have some warranty coverage left. I can't see suzuki designing a bike that would not run in the rain. the testing on all bikes before production is grueling. There must be something else wrong as most engines will run fine in torrential rain. the plug or plug wire would have to be loose or cracked to be affected by rain. hope this helps
here in Vancouver where it rains way too much, we have no reports of SV's with plug problems in the rain. I think you should get your dealer involved- a 2003 should have some warranty coverage left. I can't see suzuki designing a bike that would not run in the rain. the testing on all bikes before production is grueling. There must be something else wrong as most engines will run fine in torrential rain. the plug or plug wire would have to be loose or cracked to be affected by rain. hope this helps