Ignition ??

yortz · Sep 6, 2004

After getting my jetting somewhat close, on my last ride my bike developed a severe bogg just prior to 1/2 throttle. Then latting off the throttle and pulling in the clutch the bike dies. My buddy thought it might be an ignition problem. This is a new bike, could this be a KIPS valve issue? Scratching my head in Washignton State. :bang:

canyncarvr · Sep 7, 2004

Describe that summore.

At 1/2 throttle as you transition from off-idle to WOT? Holding it at 1/2 throttle when the revs reach a certain point? WOT is good? The bike normally idles OK at any other time?

I'm asking if it's rpm related or throttle position related.

yortz · Sep 7, 2004

It seems that the bogg is perhaps 1/2 throttle in that immediately when the powerband starts the bogg begins. Upon letting off the gas at that time th ebike dies, but can be easily started. Tried a new plug, just dropped it off at the dealership. Thank you for your followup.

canyncarvr · Sep 9, 2004

Let us know what/if they find anything.

I am nonplussed. You say 'perhaps 1/2 throttle', but reference the 'powerband'.

The powerband 'hit' of a two stroke is a response to a certain rpm, not a throttle position. It comes from KIPS activation, ignition timing changes at higher rpm and exhaust system resonance. Obviously you won't get to that point with the throttle just off idle but you surely can with most other throttle settings, depending on transmission gear, riding environs and such.

It's conceivable that a misadjusted pilot could give you such a bog if you're talking about a fairly quick wick from off-idle to 1/2 throttle.

Could be a spark box failure, too.

Let us know!

Ignition ??

yortz

canyncarvr

yortz

canyncarvr

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