03' YZ450F Oil leak below lower head bearing.

I have a oil leak below the lower head bearing on the front of my bike. It is for sure motor oil. The oil is in the frame on that year. I can not see a crack. Is there one there. Can I just run another bead over the factory one and be done with it?

Have a competent welder (you, if the description fits) weld over the crack. The frame is a light gauge high quality steel, and it needs to be correctly done.

Pressure testing the frame to locate the leak is a good plan.

Mine was cracked right along the factory weld. It was pretty hard to find. Sounds like you have the same problem. You'll need to find it to repair it.

Thanks, Jeremiah

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