Seems that some water from my bike washing got into the injector connector and must have given a bit of contact corrosion as it was wet for days. It wasn't a pressure wash, just a spray hose. Normally I'd take the bike for a ride after I wash it to help it dry but this time I put it away wet and it was raining for a week and the bike didn't dry out. The symptom was that the fuel pump was running and starter running OK. I did notice that there was no smell of petrol at the exhaust. Please excuse the shake in my video.