Cant keep Eton 90 running

[zack221]

After taking the new and old carb and comparing the jets in the new carb was way to big. I put the original jets in the new carb and finally got it running. It still needs jetted though. I think the main is to rich. It is running with the air screw at half turn out but it smokes quite a bit.

[zack221]

Anyone know where I can get some jets? I can find the stock ones but im looking for a few sizes above and below to dial it in.

[Keith J]

G-force can set you up with anything you need. just need to tell him what you have and he can take care of you.

[ontargetracing]

air screw is associated with the pilot jet not the main. Any issues at or near idle would be the pilot and air screw. Although, smoking might not necessarily have to do with jetting.. it can by too much oil in your premix, could be the kind of oil (some cause more smoke than others) etc.. You can easily tell if you need a leaner or richer pilot by adjusting the air screw. There are several places online that will tell you how. You can buy the jetts anwhere that sells whatever style you need for the brand (or copy) of the carb you have. Gforce's site is easy to use and they have all the sizes listed.

p.s. on a 2 stroke in on the air screw is richer, opposite of a fuel screw on a 4 stroke.