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Old 06-21-2013, 02:29 PM   #1
ldrider OP
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Joined: Oct 2003
Location: Sacramento, CA
Oddometer: 415
2003 F650gs won't start

I'm at the end of my wits with this one. Problem started out with a bad fuel filter/pressure regulator. Replaced that and can see a nice spray from the injector. I didn't think I had good spark so I replaced the coil. Current problem is back-firing when trying to start. The valve timing seems good to me, and I made sure there is plenty of valve clearance. I do not know how to check ignition timing on this, or if the timing could be 180 out.

Any help welcome.

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