Slight surging problem
 

The sv seems to be surging a bit lately. Its more noticeable in the lower revs when going slow in and around the city. Chain and sprocket are relatively new and in good nick. Tyre pressure is fine. Rear wheel is aligned using swingarm to axle method. Clutch seems ok. What else could cause this feeling? Definitely engine-ish as if i freewheel its not present..

Re: Slight surging problem
 

Balance the carbs up. Is it due a valve clearance check?

Re: Slight surging problem
 

Sorry, forgot to mention both balance and clearances done about 2 months ago.

Re: Slight surging problem
 

Done some reading and it looks like my bike may be running lean ie. lean surge? Is there a relatively easy way to solve this, or is it a trip to the garage even though i just got my carbs balanced and clearances checked? Don't have any experience with carbs or shims and whatnot...

Re: Slight surging problem
 

I thought they do surge anyway?
mine seems to a bit at low revs and low speed when not under much load.

Steve

Re: Slight surging problem
 

Ya, from what ive been reading they do come out of the factory running lean and some do tend to be lumpy. Funny thing is mine didnt do it before the work and only seemed to start a while after, not immediately.

Mines restricted also, if that makes any difference.
And has a baffless Beowulf slip on too...

Re: Slight surging problem
 

Check everything's attatched properly.

Re: Slight surging problem
 

Sounds more like a stuck choke to me.

The front choke plunger is susceptible to water ingress. I would guess the plunger and spring is rusted up and sticking in the open position.

Re: Slight surging problem
 

Would this not cause the engine to idle a bit higher than before the surging appeared?

Re: Slight surging problem
 

If the choke was stuck open on one of the cables, you'd have a rough idle , where the needle would move around from 1000 to say 2000 or above depending.

p.s. are you doing the toy run on sunday ?