dropped the tank off a working motorcycle, wouldn't start anymore

[semenov]

It's been 7 months since I have last ridden my FZ6 S2 '2009, and the battery was all dead. I quickly tired trying to kick start it, so decided to jump start it off my car. I unscrewed the tank and "rotated" it to get access to the battery, jump started the bike, let the engine heat properly, it all was fine. When I was closing my car's hood I accidentally touched the tank and it fell off and hung on the hoses and wires. I quickly tried to lift it back but in 2-3 seconds the engine died. Now it doesn't start (not a single "cough"), although from the first glance nothing was damaged. The tank is connected by:
- fuel hose (looks fine)
- drain hose (looks fine)
- breath hose (looks fine, it's not connected anywhere anyway)
- fuel level sensor (works ok, reacts properly when detached)
- fuel pump connector (fuel pump "sounds" ok when the key is turned to "on", reacts properly when detached)

What would you guys suggest to start from? I understand the basics (check if the fuel is there, check if there is a spark) but not particularly sure how to start? Remove the fuel hose from the fuel ramp, turn on the ignition and watch the fuel being pumped? What if it does?

Can it be that the air went to the system somehow when the tank was hanging upright and the pump couldn't get any fuel at all?

 

[stink989]

Check the pump is getting power. Sounds like the wires might be pulled out of the plug or the loom enough to effect it.
It should have 12v when the key and kill switch are turned on.

 

[Tailgate]

Whenever I need under tank access, I remove the two front tank bolts and use 1-2 bungee cords (hooks inserted into the two now vacant bolt holes and others onto grab bars, etc) to pull/keep the tank in the up position. Rear pivot bolt stays. Of course, the seat must be first removed.

 

[Gelvatron]

Check the pump is getting power. Sounds like the wires might be pulled out of the plug or the loom enough to effect it.
It should have 12v when the key and kill switch are turned on.

I'd agree with that remove the plug and make sure the power is getting to the pump

 

[FinalImpact]

He said it makes normal pump sounds so it "sounds like" the pump has power. I'd lift the tank, remove the air box lid and give the four throttle bodies a few DROPS of fresh gas and see what happens. Also check fuses under pods after jump start. Running cars can damage this bike!

Has anyone else successfully kick started their bike? Mine won't.

 

[semenov]

OK so if anyone is interested, that was air in the fuel system indeed. All it took to fix was simply trying to measure the fuel pressure, apparently this removed extra air and the bike started fine. Except of few scratches on the frame made by the falling tank, it's as good as new.

 

[Nelly]

It's been 7 months since I have last ridden my FZ6 S2 '2009, and the battery was all dead. I quickly tired trying to kick start it, so decided to jump start it off my car. I unscrewed the tank and "rotated" it to get access to the battery, jump started the bike, let the engine heat properly, it all was fine. When I was closing my car's hood I accidentally touched the tank and it fell off and hung on the hoses and wires. I quickly tried to lift it back but in 2-3 seconds the engine died. Now it doesn't start (not a single "cough"), although from the first glance nothing was damaged. The tank is connected by:
- fuel hose (looks fine)
- drain hose (looks fine)
- breath hose (looks fine, it's not connected anywhere anyway)
- fuel level sensor (works ok, reacts properly when detached)
- fuel pump connector (fuel pump "sounds" ok when the key is turned to "on", reacts properly when detached)

What would you guys suggest to start from? I understand the basics (check if the fuel is there, check if there is a spark) but not particularly sure how to start? Remove the fuel hose from the fuel ramp, turn on the ignition and watch the fuel being pumped? What if it does?

Can it be that the air went to the system somehow when the tank was hanging upright and the pump couldn't get any fuel at all?

Great news, how did you bleed the air out of the system? Thanks for letting us know what the problem was. It really helps others trouble shoot if they have a similar issue.

Thanks

Neil