Question about 2003 Ducati ST4S

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Loss of power above 3000 rpm

My 2003 Ducati ST4s will not rev above 3000 rpm when ridden but revs freely to the red line when stationary, has anyone got a solution to this problem?

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You have a fuel delivery problem. Open the gas cap on the bike & try. This will prove if a vacuum is happening inside the tank (plugged vent). Check fuel filter. Check fuel pump. Check fuel pressure regulator.

Posted on Aug 09, 2009

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