Today is oil change day, trying to get them all knocked out and I've run into an issue I've never seen before on my '09 ZX-6R. Ran it to get it up to temperature and drained the oil, fitted a new OEM filter and 3.3 qts of fresh 5W40 by the book. I cranked it up and I got an oil pressure light that won't go out after 10 seconds. I shut it off, waited a few minutes and tried again, same thing, oil pressure light is still flashing after another 10 seconds. Normally after an oil change, it takes 6 seconds to establish pressure on this bike and turn off the oil pressure light if I fill the oil filter cartridge with oil before installing, which I did. I'm baffled, it should come right up on pressure. Anyone know what is going on, oil pump lost it's prime? I'm not going to try starting it again until I have an idea what has happened. I've done a zillion oil changes over the years on many, many motorcycles, this is a first.