Smoke from timing belt shroud
99 Jetta Wolfsburg, mk3, 4cyl.
I drove 450 miles no problem, the next day about 10 min into a drive i started getting smoke from the engine bay. Specifically it was coming out the top of the shroud that covers the timing belt fairly thick. I shut it off and let it cool a bit. When i turned it back on there was minimal smoke, didn't let it run though. The next day i turned it on for a few min and no smoke.
It has leaked anti freeze for a while but I've been topping it off.
The water pump doesn't seem to be the issue but that's a guess.
It's never over heated, including when it was smoking.
It squeals just a little on start, but runs very smoothly.
I have not yet run it without the shroud, couldn't reach the lower clips.
Any thoughts on what it could be? Help!