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Old September 9th, 2020, 02:59 PM   #3
Onekallo
ninjette.org member
 
Name: Andrew
Location: Courtice, On
Join Date: Jul 2020

Motorcycle(s): 06 ZZR-250 - 05 ZZR-250

Posts: 32
Yes both will idle cold without choke yes. As much as they are acting the same, they are adjusted to both the same specs as well.

It is steady 15-25 deg C here (70*F)

From my calculations they are 2-2.5 turns out at the moment. That was where I intended to set them after being warmed up and idling using the 90* adjustment screw driver.

They have not been synced lately, but were completely soaked, cleaned, and rebuilt 3 times over (to make sure they will perfectly clean) roughly 250 miles ago.

Fuel is fresh.

Air filters haven’t been cleaned or oiled lately, I will do that tomorrow.

I did suspect that they were running rich. Plugs are a little black vs tan.

After an idle mixture adjustment and air filter cleaning, is there another way to lean these out? Spacer under the needle? Obviously re jetting is an option but I can’t see how that should be required if exhaust and intake is stock.

Thanks so much for the help.
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