I Have a DT175 that keeps clogging the spark plug with carbon.i use yamalube 2S oil is there better oil 2 use?

Question

the bike is a 2007 DT175 yamaha.using yamalube 2stroke oil
the spark plug only lasts a few hundred kilometes before coking up.

Answer 1

If the bike is a pre-mix 2 stroke, i.e. you mix the oil and fuel before you put it in the tank. Make sure you are running the proper ratio. Too much oil will cause the plug to foul fast.

Answer 2

I forget...is 2S pre-mix, or injector. Use the right stuff.
Don't lug the engine so much.
2 strokes are meant to be reved.
Don't worry to much about the break-in procedure.
Just don't hit the throttle wide open from a dead stop - accelerate gently, but allow the revs to go close to red line before shifting (approx 1-2000 below red-line).
Vary the throttle speed - don't hold the revs in one spot.
Never had a problem with Yama-lube on new bikes - take it back to the dealer if the problem persists.

Answer 3

If the bike idles for a long period of time, it will foul the plug. A lot of low speed driving will also cause the plug to foul. You need to open it up a while.
From the factory, the carburetor jettings are set very rich. This will also cause the plug to foul. If you are not familiar with changing the jetting or any other carburetor settings, have someone who is qualified check them for you.

Answer 4

Amsoil makes a synthetic 2-cycle oil for motorcycles, claims to end plug fouling and deposits:
http://www.amsoil.com/redirect.cgi?zo=1463115&page=StoreFront/ait

Answer 5

theres some other stuff you might want to try, its called ring-free, its a fuel additive that reduces carbon build up as well as remove what may exist already.

Answer 6

Perhaps you should check the float level, jetting ETC.

Answer 7

try some motul,little spendy though.