Next I ....
- ordered some new plugs off ebay (local prices are ridiculous on them for some reason)
- pulled the plugs and cleared the cylinders
- removed the FPR (new last spring) and checked it over and flushed the fuel rail with EFI cleaner and compressed air.
- disassembled the in tank fuel pump and filter. Flushed it all with EFI cleaner and compressed air.
- rinsed the tank with fresh fuel and let it air dry overnight.
- then reassembled everything with a fresh 20L of fuel laced with injector cleaner and stabil.
Following this the bike fired to life and ran great. I shut it down and let it sit overnight to allow any residual crap to settle out.
Then the next morning I pulled the fuel return line from the FPR and blocked it off with a bolt to stop fuel from pouring out of the tank. Then attached another length of line and purged the fuel pump/rail etc by cycling the pump tank again and kept the sample in a glass container. After the sample settled there was still some crud/water in fuel .... so I let it settle and repeated the process for two days every morning. The third sample finally came out clean which was a relief!
The bike now fires up and runs great again .... even on the super cold mornings .... and I made sure this time the vent line is routed so it can't be pinched.
Once the new plugs arrive she should be good to go. I am toying with the idea of pulling the injectors and cleaning them next while I wait on the new plugs to arrive.