Last month I tore apart my engine to replace the head gasket on my 2007 A4 2.0T and when I put it all back together and got it running everything seemed fine. But once the engine warms up the valves start clicking. From my understanding usually its the other way around, the valves click when the engine is cold and when it warms up it goes away, but mine is the other way around.

Just wondering if anybody has ever come across a similar problem and what you did to fix it. Thanks