I have a 2001 cbr 600 f4i that I am painting for a friend.

Part of painting it required removing the front umm "nose" piece. After I painted it we reassembled the bike only to notice it wouldn't prime the fuel pump , thus not start at all. Everything else electric works (gauges , starter motor , ect...) just not the fuel pump priming. After I jiggled the wires under the tank it did start once , but now I absolutely cannot get it to prime itself again. I jiggeled every wire I can reach.

I already read through some threads here and this is what I've tried.

1. Made sure front headlight harness plug wasn't damaged in any way and was plugging in right.
2. Hooked battery directly to fuel pump and it's own wires (and it works).
3. Tried flipping the relays on the back left hand side of the bike (neither appears to even attempt to work).


My question is , is there another relay or switch of something before those relays on the back that could be preventing this?

 

The tip over sensor is mounted between the headlights on that fairing. Make sure it wasnt mounted upside down. I would just cut the wires and bypass it to be honest. Most likely your problem though.

 

wow thank you , that was the exact problem. I honestly feel really dumb , although bikes are not my thing and I wasn't aware there was such a sensor.

I had the front fairing laying on the ground upside down next to the bike with the wire attached.

again tyty

 

No problem. It is a very common and overlooked issue.