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Hi I have a  2008 wr250r and it wont start. I have spark but no injection pulse. all fuses are good and there is power at the pcm. what next?? can any body help??

Edited by Peterspon

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Possible that the fuel pump has gone out.  It is a known issue with some of the early WR250s.

Do you hear the fuel pump prime when you turn on the ignition?

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Yes, the fuel pump runs, and I have spark. Does the crank sensor control spark? What does the lean sensor control? Where are thies sensors located? Thank you for your help. I just need to get my bike going again. I need a wireing diagram that I can see and able to read, the one I have came from yahama and its hard to make out.

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