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yellowhonda400
03-09-2009, 05:47 PM
hey i just went riding yestrday 93/8/09) and i noticed during my warm up time my 2002 400ex was buring a little oil. I checked the oil and it was fine but i could smell and see a little of smoke come from my pipe (only when i had the throttle pinned). Any of you guys know what can be the problem thanks.

jcs003
03-09-2009, 07:27 PM
what color smoke? where exactly is the smoke coming from?

crxjarred
03-09-2009, 08:08 PM
myn dose this also dosnt smoke till u get on it hard i was told it was my rings but i dono i would like to kno too

ae13291
03-09-2009, 08:11 PM
it is monst likely the valve stem seals passing oil through the valves. but dont worry about, its ok for it to smoke a little bit or only when its on full throttle.

yellowhonda400
03-10-2009, 05:27 PM
the smoke is white and it is coming from my exhaust pipe. i was wondering if i had a bad ring or gasket somewhere?