my exhaust is turning yellow

hello all. i need some help here. i noticed today after my first long trip. that the pipe is turning yellow right after the motor. the motor has 120 miles on it . this was my first two stroke and im not sure what its suppose to act like. to me it feels like it starves for fuel at times. its a 80cc with a 36tooth sprocket. 27in tires. is it running lean or rich. the only thing ive done are drill holes in the muffler.

As long as you are using enough oil 20:1 mixture you should be fine. It's probably not to unusual for this cheap chrome to start turning yellow. My motorcycle exhaust pipes always started out yellow and ended up turning a bright blue for the first couple inches out of the jugs.
Just make sure you are mixing enough oil.

John

yeah im putting 24:1 . well thats a good piont.

I've got just over 100 miles on my engine and the bend in my exhaust is a really pretty yellow/gold color. I've seen a lot of motorcycles get this way too so I figure it's normal. Mine just isn't happy starting in 40 degree weather. I have to do a lot of peddling before it finally cranks.

thats why i keep it warm in my livingroom before taking her out.