Maintenance & Technical > KX500 Original

Motor surging issues!! Help!!

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KX5Zuki:
I wasnt even running the full hill, just a quick little testing session.

But whats the deal with the plug saying its running rich? I understand what your saying about the lean part, but the plug is saying really really rich. This couldnt be a air leak issue?

KX5Zuki:

--- Quote from: stewart on May 25, 2009, 06:44:52 AM ---looks like fun

--- End quote ---

Hey, I was trying to get a hold of you all weekend to ask if you could give me some pointers. The 707 number that kept calling. Sorry if I was bugging. Its the '86 motor that I was talking to you about.

Also, I just rememberd that I just bumped up to running 40:1 premix, meaning its running richer, correct? So the lean issue shouldnt be an issue?

Hillclimb#42:
Check base gasket and head gasket. If its weeping oil there, its leaning out by air leak. What about throttle cable end into carb? The casing is not hanging up on the top chamber? I've seen em act that way with either one of those issues.

stewart:
i called you back and got no answer several times  ,,how old are your crank seals

slow600:
my bike did this from day one, before and after a complete rebuild. i researched and was told a certain amount of surging is normal with this bike. is this incorrect?

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