tried cranking my 2000 zx 12. no luck. turn the switch on the digital fuel guage reads full which the bike is full of gas and then the fuel injection relay switch clicks an the fuel reads empty. I try and crank it a red light on the dash with an FI on it comes on. Fuel Injection im guessing. Is it the relays? Didnt have this problem till the battery went did and i tried jumping it off. The battery is charged now and not cranking. Any suggestions. Relay my first guess.

 

i would start by checking the fuses. is there any power when turn on the key???

 

wait - so it won't even crank now? a

if it does crank and all the fuses are goodbut doesn't start then i'm going to guess that you aren't getting fuel pressure could be a relay could be that something shorted out before which caused the battery to drain and is still bad.

 

the bike has been sitting thats y the battery went dead. when i tried to jump it off with a jump box this all started. before i had no probslems cranking it.

 

i had the same problem with my 636 battery would not hold a charge even when it read it was good. ended up replacing the battery and getting a battery tender and so far so good. no issues.