I am losing small amount of coolant over time.
I have both lean codes.
I done most of the vacuum leak repairs, smoked it.
No signs of coolant leaking, no smells.
Only smoke showed around throttle body.

Is there any way the coolant could be leaking from the
contraption under the TB and into the TB causing a lean condition?

And that is why I find no leaks, I thought worth asking.

 

I would be placing money that you are going to find a rip in the bot on the front of the throttlebody. There are no other likely leak points on the throttlebody. The only other possibility is the o-ring on the downstream side of the throttlebody.

 

The shafts in the tb leaks too when they get older worn, and no on coolant causing lean codes

 

Ok, I figured a long shot, but that is where my luck hangs.
Thanks