Help - Seized throttle - Stuck at friends.

[Veloce-Fino]

I'd do the hot water spray and Techron instead of the Seafoam ingestion.  Techron is claimed to be better than Seafoam cleaning the fuel system.  Steam is probably faster cleaning the carbon in the chamber.

I wonder if you are seeing some exhaust pressure wave hitting the cylinders when both valves are overlapped open.  Could account for the crud. 

I wonder if my specific exhaust could be contributing to this problem. However my setup has very low back pressure which is anything would cause the opposite. Drawing out of the cylinder during overlap which explains the backfiring due to unburned fuel being sucked out of the cylinder.

Unless I'm misunderstanding.

[Triple J]

Could you have put too much oil on the MWR filter when you installed it?

[battlecry]

Hard to say, V-F.   It is not just a matter of back pressure, it involves sound wave resonances and echoes generated where the pipe cross section changes, and it changes over the rev range.  Wouldn't it be great to stick a camera in there and see how this all works?   

I'm glad you are good to go   

[Veloce-Fino]

Could you have put too much oil on the MWR filter when you installed it?

Came pre-oiled. Didn't seems like an excessive amount of oil. If that was the case, time would be the cure.

Hard to say, V-F.   It is not just a matter of back pressure, it involves sound wave resonances and echoes generated where the pipe cross section changes, and it changes over the rev range.  Wouldn't it be great to stick a camera in there and see how this all works?  

I'm glad you are good to go    

That would be very cool. Hopefully my setup if not negatively affecting my bike that much. I'm actually installing a set of baffles this weekend to get me within the dB limits for track use and increase backpressure.

The routing is the same to the mid-pipe. The mid-pipe itself is very very similar to stock as well. Very slight changes overall. Then again, it only takes a little to affect the flow.

[cokey]

Some one pood in it when uwas inside..  

[DoWorkSon]

I would say that the filter was wayyyyyy over oiled. Dust/dirt entering into the filter and then excess oil coming off the filter probably just built up all that gunk...  I would clean/lightly oil that filter...  But luckily it got fixed! Maybe run some fuel system cleaner to get out any more gunk that might have made it past throttle bodies into the engine.

I know seafoam was always talked about very highly in my car wrenching days... I don't know about motorcycles though

[Cloner]

At Desert Desmo we typically clean the throttle body bores as part of our 7500 mile maintenance routine because of this very problem.  It is VERY common to see Ducati throttle bodies with lots of gunk around the butterfly valves.  This causes sticking in extreme cases.  However, even absent sticking it often causes poor idle and off idle performance.

We recommend that owners add this quick bit of maintenance to their schedules whenever we meet someone who wants to do his own work.  If you've already go the airbox top off to maintain the air filter, what does it cost you besides a little cleaner and a few Q-Tips?   

[Howie]

I would say that the filter was wayyyyyy over oiled. Dust/dirt entering into the filter and then excess oil coming off the filter probably just built up all that gunk...  I would clean/lightly oil that filter...  But luckily it got fixed! Maybe run some fuel system cleaner to get out any more gunk that might have made it past throttle bodies into the engine.

I know seafoam was always talked about very highly in my car wrenching days... I don't know about motorcycles though

Seafoam is great for gum deposits in the carbs.  Techron is great for carbon.

[Veloce-Fino]

At Desert Desmo we typically clean the throttle body bores as part of our 7500 mile maintenance routine because of this very problem.  It is VERY common to see Ducati throttle bodies with lots of gunk around the butterfly valves.  This causes sticking in extreme cases.  However, even absent sticking it often causes poor idle and off idle performance.

We recommend that owners add this quick bit of maintenance to their schedules whenever we meet someone who wants to do his own work.  If you've already go the airbox top off to maintain the air filter, what does it cost you besides a little cleaner and a few Q-Tips?   

Except on the 696, you must completely remove the fuel tank, disconnect ecu, coils, battery, entire airbox, and tons of small shit to get the TB's exposed enough to clean them. Not hard, just time consuming.

Hell, a few more bolts and disconnections and I could have pulled the entire motor.

Give me a few key hex keys and some crescent wrenches and I can have a Ducati completely in pieces in about 2 hours.

Putting it back together, well that's a whole different story.