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Electric problems

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I have a WR426, after the first several enduros i begin to modify it more. I have a yosh pipe, yz throttle stop, air box removed. Recently i changed the cam timing, and disconnected the sky blue wire for easier starting. Now however, it won't run. The bike refuses to start most days and when i can get it to start it acts like its not getting fuel, even though i know it is. It has also started fouling plugs. I was wondering if this could be ignition/stater coil problems, i have been through the jetting mutiple times and checked to make sure the cams didn't slip after reassembly. Any other ideas on what might be wrong?

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sounds rich

- clean air filter ?

- over oiled air filter ?

- didnt wait after installing newly oiled air filter

- gummed up carb

....

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