smoke while idlin
 

My 02 gmc 3500 duramax is faintly smokin while idling is this an injectors goin down Im new to a duramax so i aint sure i know enough that its not supposed to do this but any answers are helpful

If it's white or gray coloured smoke then its an injector. Probly should get the balance rates checked to find out which one it is. They can caused damage if not fixed.