07 FSR 450 injector problem?

[GavGav]

Anyone had any problems with the injector not working?

Occasionally my bike will just stop.

Fuel pump is working. (can hear it)

Took injector out and held the fuel line on it while turning engine over with the start button. No squirts of fuel...

Removed injector and connected a 9v battery to the terminals and can hear it "Click, Click".

Put bike back together and all is great.

It did it again about 2 hours later. this time I just disconected the electrical conector and reconected and disconected a few time as I thought it may have just been a connection problem.

But still no go.

So I connected the 9v again and got the click click.

Put it all back together and off she goes.

Can fuel contamination stop it working??

Do injectors sometimes fail??

Love the bike but his is getting to be a problem, especially on the trails.