Ducatisti Forum - View Single Post - Problem Blipping Throttle? (2003 Monster 620sie)

**V90** · 30 Jan 08, 01:38 AM

I think Ghost would be right about it just being a fuel issue if it had carbs but the 620 is injected. The noise is very likely a spit-back through the throttle bodies, and not a mechanical noise, which a service may fix - fuel set-up, valve clearances and perhaps compression check to show if valve not seating. If the throttle is blipped a bit slower instead of snapping it open quickly it may stop the spit-back - no substitute for a proper service though.
All guesswork without seeing bike of course so no guarantees

30 Jan 08, 01:38 AM	#5 (permalink)
V90 Track Day Demon Join Date: Feb 2006 Location: east northants Posts: 249 V90's Gallery	I think Ghost would be right about it just being a fuel issue if it had carbs but the 620 is injected. The noise is very likely a spit-back through the throttle bodies, and not a mechanical noise, which a service may fix - fuel set-up, valve clearances and perhaps compression check to show if valve not seating. If the throttle is blipped a bit slower instead of snapping it open quickly it may stop the spit-back - no substitute for a proper service though. All guesswork without seeing bike of course so no guarantees Last edited by V90; 30 Jan 08 at 01:50 AM.