Help - Seized throttle - Stuck at friends.

[Veloce-Fino]

Rode the 696 to a friends, parked it in his driveway. Come out to leave a few hours later and try to spin the throttle.

It is completely seized.

The throttle cable if fine, checked it on the bars and followed it to the throttle cam and it works fine, tugging on the cam as I roll the throttle.

However the throttle cam will not move, no flex, no movement, nothing. It is completely locked in position.

Either the cam is stuck or the butterfly in the throttle body is stuck.

Can't start the bike because the throttle is stuck in the closed position and my bike stalls from cold start without a little throttle.

I considered something being stuck in the throttle body, but that makes no sense because I rode the bike up and parked it. If it was a bug there would be some flex, a little movement, but there is zero movement. Maybe a rock? But how would that get in the bike after I parked it.

I'm guessing it is something more mechanical and not due to external variables.

Any ideas or experience with this issue?

[ducpainter]

Can you pull the filter and look in there?

[Veloce-Fino]

Can you pull the filter and look in there?

I could. Remove everything and pull the airbox off and check the butterfly.

Makes no sense though. Even if a small rock got in there the butterfly rotates in a way that would just drop it into the cylinder, I can't see how it would completely seize up. 

Thinking the problem is the throttle cam? I'm afraid to force it for fear of damaging it or bending/breaking the cam.

[ducpainter]

I could. Remove everything and pull the airbox off and check the butterfly.

Makes no sense though. Even if a small rock got in there the butterfly rotates in a way that would just drop it into the cylinder, I can't see how it would completely seize up. 

Thinking the problem is the throttle cam? I'm afraid to force it for fear of damaging it or bending/breaking the cam.

I agree it makes no sense.

You have to start somewhere.

[Raux]

check both the outer throttle cam assembly and cable AND the inner one betweent the throttle bodies.

my inner one siezed up.. OPEN.. that was fun... WD40 freed it

[Veloce-Fino]

check both the outer throttle cam assembly and cable AND the inner one betweent the throttle bodies.

my inner one siezed up.. OPEN.. that was fun... WD40 freed it

In the process of removing everything and getting to the TB, on the fuel tank now.

I'm hoping it's something simple I can solve here, not a damaged part.

[ducpainter]

Just make sure you have it completely freed up.

You don't want it sticking again...open.

check both the outer throttle cam assembly and cable AND the inner one betweent the throttle bodies.

my inner one siezed up.. OPEN.. that was fun... WD40 freed it

I had a throttle stick open.

Fun is an accurate description.

[rockaduc]

Could it be stuck in the bar end?

[booger]

I had similar thing happen when the TBs were ridiculously out of sync. I had absent mindedly neglected to screw the air bleeds all the way in before beginning the sync procedure and got a false reading causing me to adjust the TB sync screw to out-o-whack. The throttle butterfly plates were binding inside the bore of the TBs. I freaked before I finally figured it out.

Not at all saying this is what your problem is, this is just for your info.

[Veloce-Fino]

Have everything stripped down.

TB's are completely clean. Can't rotate ANY part of the TB linkage on either TB.

Problem is the linkage, not the TB itself or the butterflies.

Going to keep "problem solving," aka messing with shit.

[Veloce-Fino]

Got it fixed and completely back together. About to ride home.

The butterfly for the horizontal cylinder was stuck due to a major buildup of "gunk."
Sprayed some carb cleaner in both throttle bodies, let it soak for a minute and used the wooden handle of a paintbrush (homage to DP) to lightly smack the butterfly. It popped right open and the throttle actuated just fine from there.

Used carb cleaner and an old toothbrush to scrub the TB's and wiped them out with a clean cloth. I'm amazed at the amount of dirt that was in there.

I don't think it was carbon, no combustion in the throttle bodies.. Looked like it was just 5,000 miles of crud buildup.

Not bad tearing the bike down fixing it and reassembling in 3 hours + 1 minute.

[ducpainter]

Sweet...

[Slide Panda]

I don't think it was carbon, no combustion in the throttle bodies.. Looked like it was just 5,000 miles of crud buildup.

Not bad tearing the bike down fixing it and reassembling in 3 hours + 1 minute.

I wonder why there's so much crud. I've never really shot carb cleaner into my TBs and they are pretty good at 33,000 miles. I do use BG-44 or SeaFoam with decent regularity. But still so much gunk that it binds the TBs makes me wonder a bit

[Veloce-Fino]

I wonder why there's so much crud. I've never really shot carb cleaner into my TBs and they are pretty good at 33,000 miles. I do use BG-44 or SeaFoam with decent regularity. But still so much gunk that it binds the TBs makes me wonder a bit

I agree. It's very strange. When I installed my MWR filter a few weeks ago the stock paper one was fairly clean at 5k miles. The fine foam combined with the oil of the MWR filter should keep out any particles large enough to build up on the TB walls. Buildup like I saw could only be from airborne dirt.

Interesting changes to the bike after cleaning.

1. At startup, no more stalling, no fast idle needed. Bike starts and runs first try. 
2. Bike idles 200rpm higher at idle both cold and hot.
3. Throttle response is MUCH more strong. The TB' went from being thick with black shit to shiny clean.

I can't believe how different the bike is from this little cleaning. I'm wondering if I should run SeaFoam through the entire engine. Put some in the oil/intake/gas tank, and see what happens. I'm pretty sure you can put that shit anywhere.

[battlecry]

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.