Questions on a 1992 325 sedan

[tabbruzz]

To all,

I'm looking at a 92 325 and it has a few problems. I need to know what you think could be the problem.

1) White smoke coming from engine bay. Could it be a leaky valve cover?

2) only one window works. I will look at the switches first. What is the most common issues with the PW?

3) Air blows out, but not cold. is there a common weak point in the system to look at? I did not try to recharge yet.

Thanks, Tony