ninjette.org - View Single Post - Shimming the Carb Needles... Is it for You?

ShishkaBOMB · May 22nd, 2009, 09:10 AM

I was searching for threads about "throttle lag" and found this one which i think might describe my situation.

My bike only has about 230mi and this just started to happen recently for some reason.

I noticed when i first took it out for a ride, pulling out from a stop and in first gear i would put the clutch into the usual friction zone while revving up to about 2000rpm. What was odd was that it didn't rev! I had to open the throttle a little bit more but by then it would just jump up out of nowhere.

I now have the bike on stands and the fairings off and am trying to fix this problem. I thought maybe it was throttle adjustments, but it seems fine. Bike is a CA model, 08, 230mi, idles at 1300.

When i start the bike it usually hesitates a bit, in cali warm weather. It will then idle after a bit of working but sounds like it's struggling. So i would put on the choke for a few seconds then turn it back off and get on my way. I try to start it up without the choke but it would be easier if it were on.

Anywho, when i slowly rev the bike it it seems fine. But if i were to open the throttle a little quicker it would lag, count 2 seconds, then it would jump up high. Sometimes it would stall.

Does shimming sound like what i need? Or could it be something else?

Thanks!

May 22nd, 2009, 09:10 AM	#24
ShishkaBOMB ninjette.org member Name: Shish Location: SGV, CA Join Date: Apr 2009 Motorcycle(s): Ninja 250 Posts: 35	I was searching for threads about "throttle lag" and found this one which i think might describe my situation. My bike only has about 230mi and this just started to happen recently for some reason. I noticed when i first took it out for a ride, pulling out from a stop and in first gear i would put the clutch into the usual friction zone while revving up to about 2000rpm. What was odd was that it didn't rev! I had to open the throttle a little bit more but by then it would just jump up out of nowhere. I now have the bike on stands and the fairings off and am trying to fix this problem. I thought maybe it was throttle adjustments, but it seems fine. Bike is a CA model, 08, 230mi, idles at 1300. When i start the bike it usually hesitates a bit, in cali warm weather. It will then idle after a bit of working but sounds like it's struggling. So i would put on the choke for a few seconds then turn it back off and get on my way. I try to start it up without the choke but it would be easier if it were on. Anywho, when i slowly rev the bike it it seems fine. But if i were to open the throttle a little quicker it would lag, count 2 seconds, then it would jump up high. Sometimes it would stall. Does shimming sound like what i need? Or could it be something else? Thanks!