Dreadhead

iv got a 2001 suzuki sv650s and it seems every time i wash it the engine starts to play up i think theres water some where in the electrics which is making my front cylinder not fire i thought it might be water sitting in the cylinder top where the spark plug seats i try'ed to dry it out the best i could but it made no difference at all

after washing the bike i run it for about 20minuits while i do the chain then i ran it for 30 mins on my way home after work and it seemed fine but when i came to it the next morning it would'nt run properly at all

has anyone got any ideas what it could be or do you think i could still has some water residue on the spark plug cap

thanks,
kenny