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my kawasaki stx 900 is not performing well. i fitted the engine with a new crank and new pistons. I did the compression test the result was 110 on each cylinder. When i start the engine gas down, it revs 2500 but no more. does anyone have any hints to what's wrong pls?
 

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Have you check the reeds? at lower rpms checking the compression they might be holding up but at higher rev's is where you may have a problem. Look at the carbs also for any vacuum leaks or vacuum lines leaking be careful you don't want to create a lean condition for very long because you know what will happen. Thats where I would start.
 
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