Join Date: Sep 2012
Motorcycle: 2006 GSXR-600
Jerky throttle in a low gear + hesitation + severe engine braking
So this problem seems to randomly pop up and disappear, through the whole temperature range. I have no idea what it is. In a low gear, mainly 1st gear, the bike seems to be kind of sluggish until around 4k+ rpm at which points it starts to behave normally, but the second I close the throttle, it starts to engine brake EXTREMELY severely. Before it reaches the sweet spot though, the acceleration also seems to be sort-of hesitant. This is not the case when the bike is acting normally. I know the difference.
I know that the actual engine braking is already pretty high on the gixxers, but when this happens, the bike starts slowing down as if it's sluggish and like it's about to stall. If I apply throttle even slightly more than really eeeeeeaaasing onto it, the bike jerks forward. This happens even at a moderate speed of 25mph, so no, the clutch does not have to be pulled in. I know this is not normal because a few days ago, it wasn't doing this, and even today, it disappeared for a short ride and then later reappeared again.
Also, this problem does not occur in a higher gear. I think it's the worst in 1st and 2nd, but in 5th gear for instance, even at a speed of 40mph, when I let off the throttle, the engine braking is completely normal, the way it should be. Something is definitely off. What could this be? The TPS? SET valve? Too much oil? And why?
Last edited by chopskey; 10-28-2012 at 12:49 AM.