My 2006 Bonneville T100 Sputters

[Serge1952]

My 2006 Bonneville T100 sputters once, sometimes twice when it is cold. It happens only when driving not This seems to go away when it is warm. I have already replaced the coil and spark plug caps and cables.it happens both when he comes out of the garage and outside when wet. I ride on super 95. It only happens when driving, not when idling. Can anyone help with this?
Thanks

 

[Qship]

Is your bike fuel injected or carburetor? Think they went fuel injected in 2007 here in North America. Maybe a year earlier for Europe?
Could be partly clogged passageways in the fuel system. Have you ever ran a good quality carb/fuel injection cleaner through it?
Bad crank sensor could cause this, but usually electrical problems happen once bike is hot.

 

[Serge1952]

Is your bike fuel injected or carburetor? Think they went fuel injected in 2007 here in North America. Maybe a year earlier for Europe?
Could be partly clogged passageways in the fuel system. Have you ever ran a good quality carb/fuel injection cleaner through it?
Bad crank sensor could cause this, but usually electrical problems happen once bike is hot.

The bike is a carburetor type
Thanks

 

[atomsplitter]

Does it happen around 4K RPM? That's the transition zone from intermediate to main jets on most carburetted bikes. Indicates the carbs need cleaning and synchronization. You can try dump in carb cleaner like Sea Foam that might help with the sputter, but if it continues to stumble the only fix is a thorough cleaning. If you go that route you might also want to replace your carb diaphrams as they are aging as well. Good luck.

 

[Qship]

Around what rpm are you encountering the stumble/sputtering?

 

[rodsridin]

I had similar problems with my 2007 scrambler and the CVK carbs. I removed the air injection stuff and air box, re-jetted and the problem went away. You may not have the same carbs on the European configuration.

 

[sikatri]

It’s pretty easy to clean those carbs. Has there been any changes from factory? If so you might want to look at updating the jets.

 

[Serge1952]

Does it happen around 4K RPM? That's the transition zone from intermediate to main jets on most carburetted bikes. Indicates the carbs need cleaning and synchronization. You can try dump in carb cleaner like Sea Foam that might help with the sputter, but if it continues to stumble the only fix is a thorough cleaning. If you go that route you might also want to replace your carb diaphrams as they are aging as well. Good luck.

The carb cleaner did the trick, thanks

 

[Serge1952]

Does it happen around 4K RPM? That's the transition zone from intermediate to main jets on most carburetted bikes. Indicates the carbs need cleaning and synchronization. You can try dump in carb cleaner like Sea Foam that might help with the sputter, but if it continues to stumble the only fix is a thorough cleaning. If you go that route you might also want to replace your carb diaphrams as they are aging as well. Good luck.

Carb cleaner did the trick, thanks

 

[Serge1952]

Does it happen around 4K RPM? That's the transition zone from intermediate to main jets on most carburetted bikes. Indicates the carbs need cleaning and synchronization. You can try dump in carb cleaner like Sea Foam that might help with the sputter, but if it continues to stumble the only fix is a thorough cleaning. If you go that route you might also want to replace your carb diaphrams as they are aging

 

[Serge1952]

Carb cleaner did the trick, thanks

 

[Serge1952]

Does it happen around 4K RPM? That's the transition zone from intermediate to main jets on most carburetted bikes. Indicates the carbs need cleaning and synchronization. You can try dump in carb cleaner like Sea Foam that might help with the sputter, but if it continues to stumble the only fix is a thorough cleaning. If you go that route you might also want to replace your carb diaphrams as they are aging as well. Good luck.

Carb cleaner did the trick

 

[Serge1952]

Around what rpm are you encountering the stumble/sputtering?

Carb cleaner did the trick,thanks

 

[Serge1952]

Around what rpm are you encountering the stumble/sputtering?

Carb cleaner did the trick,thanks

 

[Serge1952]

I had similar problems with my 2007 scrambler and the CVK carbs. I removed the air injection stuff and air box, re-jetted and the problem went away. You may not have the same carbs on the European configuration.

Carb cleaner did the trick,thanks

 

[Serge1952]

It’s pretty easy to clean those carbs. Has there been any changes from factory? If so you might want to look at updating the jets.

Carb cleaner did the trick,thanks

 

[sikatri]

Carb cleaner did the trick,thanks

Excellent!

 

[atomsplitter]

Good to hear it's running better. It does indicate that a carb cleaning and sync is in your future however.

 

[Rocky]

Good to hear it's running better. It does indicate that a carb cleaning and sync is in your future however.

I agree but am happy to hear that it's running much better. The problem was obviously with the carbs which are/were gummed up a bit from stale gas.
I have to store my '06 for nearly six months over the winter and the first thing I do is drain the carbs dry. Next comes the gas tank as I have a warm and dry basement for storage.

 

[sikatri]

Brings up the question, are you running gas with ethanol? If so switching to ethanol free will keep the carburetors cleaner longer.