I bought a 2004 cbr600f4i a few days ago and it ran great for 3 days then today I went out to start it and the fuel pump wouldn’t prime. Regardless if the kill switch is on or off I hear a small click like a relay and that’s it. It will keep cranking but never start. I tried jumping the fuel pump but it still wouldn’t turn on what else should I try and how do i do it?

 

Welcome to the forum.
It would appear to be a wiring issue as it was working, part failure would seem unlikely.
Could be BAS or Kill Switch which are in the pump prime circuit.

Try this link from dannoxyz which will guide you through the testing process.
https://cbrforum.com/forum/f4i-main-...1-06-a-163487/