I know its a tad off topic,and dont really belongs here,
but i hope you can help me anyway.
Im the proud owner of an 1956 Nsu quickly type N.
after 3 years of work,she´s in driveble condition again.
The only problem i have,is that she runs to lean.
the carbie is a bing 1/14/86 from an agria garden tiller.
The mainjet is 82,the circlip is in groove nr.4.
The sparkplug is grayish.
What do you think,what mainjet can i try, to get a nice brown sparkplug?
i tried to close the choke half way,but the plug was still gray.
the exhaust manifold is shorted,if this matter for the adjustment.
Thank you very much 😀
My understanding is that unless you have been running mostly on full throttle you should look first at the needle position or the slide cutaway.
If I was in your position I would raise the needle a notch to richen the midrange – if it spits back when you blip the throttle you might need a smaller cutaway on the slide.
It really ought to run rich with the choke closed, if it doesn’t there might be an air leak somewhere, also exhaust system length is important, if it’s too short it might weaken the mixture…lots to mull over!
Hope I’m not telling my grandmother how to suck eggs, if you see what I mean. Good luck.
I think i solved the problem.
The carbie now has, a shorter jetneedle,the result=
it runs too rich.then i tried a 79 mainjet and viola nice brown plug.
I wish everyone a marry christmas and a happy new year.
keep on scotting!