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Discussion Starter · #1 ·
May need a little help here. I've got an 02 ZR600EFI that wants to surge, like a governor going in and out, when just cruizing down the trail under 7000rpms. Seems worse about 6200-7000 at kind of that cruising speed. Power valves are all cleaned and adjusted. Had 125 pounds compression and put rings in anyway since up around 3500 miles and all looked good inside. V-Force reeds look good too. Dealer thought maybe the safety valves in tank were bad, so put both of those in also. Normal lights on CPU when starting. Clutches look good.

Any other ideas??
 

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Check that the power valves are in correctly. I've seen that engine do some wierd things with the power valves in backwards.
 

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Discussion Starter · #4 ·
Doubt they would be opening and closing that often with a steady throttle. Has anyone had this happen?
 

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Check your motor mounts. If your engine can move forth and back any,
your clutches will most likely be shifting up and down...
 
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