'79 GS850 sputters while cornering now!?

[onchiman]

I'm slowly getting this beast tuned up but am having a particularly difficult time with the carbs. It's running quite fine except when warm, going around a tight right turn!? Then it sputters coing out of the corner. Is this a fuel level issue? I set the float heights on the vm's to 23mm which would be the high side of the spec. Would lowering the fuel level (24-25mm float level) be the appropriate course of action?

[Steve]

Would lowering the fuel level (24-25mm float level) be the appropriate course of action?

That could affect it. Not sure why the difference between left and right turns, though.

When you turn, you are adding "G" forces to the bike, but only in a "down" direction, that is, from you, straight through the bike to the tire contact patch. As these forces increase, the carb floats might be forced down just a bit, allowing more fuel to enter the float bowl. Since your float level is already just a bit high, this might make it too high.

Just a thought, and I thought I would share it with you before it died of lonliness. 8-[


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[onchiman]

Tore open the carbs (again). Nothing dirty but then I found a loose pilot jet! Guess I forgot to tighten it down when I rebuilt them two weeks ago. Man I'm getting forgetful in the old age. All back together now and no more sputter!

[smagnusen]

Just a thought, might it be that your throttle cable is getting bound one way or another during a right turn. While stationary, give the engine a little gas and turn the column to the right. Try it at idle as well.