I have a 2001 MV Agusta with low miles. I was doing some maint. on it this\nweekend (oil change, installed FBF risers, replaced ram-air-tube seal). I\ntook it out to wash it after completing the work, and it didn't seem to run\nright. After washing it, I took it around the block and there was definately\nsomething wrong.\n\nThe bike idles too low (maybe 600-700rpm), stalls at idle, and opening the\nthrottle doesn't change RPM until it "catches" at some point, and screams to\n4-5K. It didn't have any of these symptoms when I last rode it about a week\nago.\n\nSomeone suggested a vacuum leak, so I hookd ut my mercury-sicks and it all\nlooks balanced. When I toll on the throttle in neutral off idle, the RPMs do\nnot increase, but the vacuum drops? I checked out most of the sensors going\nto the CPU and they are at least close to right resistance.\n\nAny Ideas?\n\n1) Vacuum Leak: can't hear it, carb balance looks reasonable\n2) Fuel Filter or Pump: Bike seems OK at high RPM but won't idle well - my\nunderstanding is that if one of these was bad, the problem would be more\npronounced at high enginer speeds, where more fuel is needed.\n3) Throttle Position sensor: This seems plausible. I disconnected it and the\nbike would idle but not accellerate at all, so some similarity there.\n4)???