The front brake of my Dirt bike is weak?

[ihaveaquestionm]

I have an 04 yz450f. The front brake hardly has any stopping power. I can pull the lever into my grip.. thats how bad it is. I have bled the line several times, which helped for a little. I have also zip tied the lever to the grip over night to let air bubbles out of the line. My pads are fine. any suggestions?
Thanks

 

[MotoX86]

Zip tying the brake lever to grip does nothing.

Make sure there is enough brake fluid in the system.

Correct way to bleed brakes: Read what Skipper says.
http://forums.dirtrider.com/70/7028154/dirt-bike-repair-maintenance/bleed-my-brakes/index.html

 

[SinisterCheese]

have a mechanic look at it