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Roll on the throttle bikes turns off
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Exclamation Roll on the throttle bikes turns off - March 12, 2006, 08:42 PM


Mech Help!!!!

I had this problem before I stored my 93 CBR this winter and I have having it again. It might seems like something simple and thats probably why I cant figure it out.

When I roll on the throttle the bike shuts. It only happens every once in a while, but it happens often enough to be unsafe for major road riding.

Any ideas?
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March 12, 2006, 09:00 PM

I don't fully understand. It will idle but when you give it gas it dies and it is not rideable? Or you are able to ride it, but it will cut out at times?


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March 12, 2006, 09:09 PM

Exactly, it will run at idle fine. But when I try to roll on the throttle it shuts off.
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March 12, 2006, 09:26 PM

It's getting too much air or not enough fuel. Getting more just doesn't happen unless the air filter is removed. It is likely that the pilot jets are clogged. Pilot jets control fuel flow at low rpm gradually have less of an effect as rpm rise and the fuel is metered by the jet needle. I've have success with adding a carb cleaner treatment to the gas. Add it to the gas and mix it up well and let the bike run for a while to get the cleaner through the carbs.

If the jets are just gummed up it ought to start running alright in a few days. If not you'll have to remove the carbs to check and clean the jets by hand.


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March 13, 2006, 08:52 AM

The fact that it is intermittent sounds strange. How intermittent? Are you doing something different when it happens vs. when it doesn't? Maybe there is some type of debris in your carb that is only blocking one of the jets sometimes. Although, with 4 carbs, I would guess that would just make it run rough, not shut down completely. Perhaps someone here knows whether what is happening is symptomatic of a bad accelerator pump, sticking float, or something else. I would think if the jets were just gummed up, it wouldn't be intermittent. Like Travis said, try the treatment first, but if that doesn't work, you'll need to pull the carbs.
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March 13, 2006, 10:58 AM

It just happens, cant really figure yet if its when I am doing something specific. I will try the carb cleaner, and update. Thanks for the info.
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