White smoke in engine compartment

[Alexander]

Hi everybody,
Great forum.
Recently, I have installed fresh water cooling system from Indigo. The engine runs great but I noticed tiny threads of white smoke coming up somewhere from underneath the manifold. I will appreciate advices and comments on what's most likely causing it and how to fix it.
Thanks.

[jayw]

Does the white smoke have any smell?
If it is from an antifreeze coolant leak, you should be able to smell hot antifreeze. If it's from oil it will smell like hot oil.
Do you have a crankcase vent to the intake of the carb? If not, the smoke might be from the vent tube on the side of the block near the flywheel end above the intake screen for the carb.

[Alexander]

It was hard to pick any smell. It was definitely not oil, I think.
I do not have the crankcase vent.