Why is steam coming from my 2001 Volkswagen Golf's oil filler?

I have a 2001 Volkswagen Golf TDI 130 and I've noticed that there is steam coming out of the engine in the area around the oil filler. I found oil around here and it seems to be finding its way to a slight leak underneath the front of the car. The engine temp is fine, coolant is ok and the oil level is ok. Any ideas what the problem might be?

Asked on 5 June 2010 by ledzepfan

Answered by Honest John
Blocked EGR valve.
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