I have an 07 HD Street Glide with 5K miles on it. Everything is stock as of right now. I have been told that a white puff of smoke comes out of the left exhaust pipe when I let off of the throttle.

I mentioned it to the service guy at my dealer, and I suggested a couple of things it might be, he just looked blanked faced back at me.

This happened before the 5K service and after the service. The bike is only 2 months old. I use syn 3 in it.

Any ideas out there on what it might be causing this?

 

Intake valve seal could be shot, or excess oil in the head not draining back.
Ron