FZS600 runs rough after washing the bike

[Spiffle]

If you've owned a tdm this one should be easy. Wrap the coils and leads in sa tape.
If you have COP's then they are likely shorting to the head and need replacing.

Will check what you describe pronto! Would you also elaborate on the terms 'sa tape' and 'COP's'?  :rollin


Thanks!