Radiators...

[kebab19]

there were clouds of steam and water leaking from the drain hole at the bottom of the silencer. I mean puddling on the floor leaking.

Very weird. I'm not sure what's gone wrong, but after several weekends work I just couldn't face taking the sump and clutch off, so I'm getting the dealer to collect it and sort it out. The dealer said that water pumps seals are known to fail if a bike has been stood too long

This happened to mine when I first bought my 1000 - water pump failure - spewed all the coolant out the drain hole onto the garage floor.  Fixed it myself with a 2nd hand waterpump assembly & the excellent Clymer Manual, but I also replaced the cylinder head as a precaution as she'd been boiling the coolant dry even on short runs. Then did the big valve clearance check whilst everything was apart.  Came to about £700 including all the OEM gaskets and ran faultlessly for another 12k miles before I sold her