UPDATE #3 Trying to follow the book here . I tried to start the bike ( cranked over but no fire ) pull the sparkplug and the electrode was DRY .

Im going to do a fuel flow test next .

open to any ideas please

 

Update #4 . Okay now im lost , I did the fuel flow test and it is good . So there is enuff fuel going and coming back in the return but there is NO fuel on the spark plug .

 

Did you also try to drain a float bowl to make sure the fuel is getting into the carbs? Perhaps there is a blockage somewhere?

Sounds like something small now. One problem is fixed right? The battery doesn't immediately die on you.

It's very odd considering your first post stated that you had the bike going just fine.

 

No carbs its fuel injected . Yes I fixed the small problem ( the battery) but why would fuel be running but not making it to the spark plugs ? My next guess is ecm not telling the injectors to open ?

I have no idea now

 

I would swap yours with a known, working ecu and at least rule it out.

 

Hi. Did you charge the new battery up before you installed it on your bike? I know it sounds daft, but it is best to charge it or at least check the voltage even though it is new. Might just be worth an overnight charge on a low rate?

 

joe : I agree but I dont know where to find a good one . There $900 new .

patrol : Yes I did charge it , I kept it charged the whole time I have been working on the bike .

 

Have you checked the fuses and relays?

 

yes i did .

UPDATE: okay i went and bought a NOID tester light and pluged it in , Tried to start the bike and it NEVER lit up ( I checked all of the injectors and nothing )

is there anything else it could be besides the ECM ?

 

Hey man my 02 F4i is doing same things

https://cbrforum.com/forum/general-t...d-help-144670/

Check that post...

My bike is currently in the shop and supposed to know in the next out or 2 whats causing the issue... As long as the mechanic doesn't take the bike till tomorrow i can let you know what fixed mine