Hi, I've got a 2001 Golf 2.0 GTI and I've no idea how to change the spark plugs. I've looked under the cover and there is some plastic thing on top of the engine. What is it? I couldn't see normal plug leads, I saw what I thought was a plug lead, do I just pull hard as with usual plug leads?

I presume I need to dismantle the plastic device which blocks access to the middle two plugs?

Or am I completely wrong? Perhaps they are positioned into the back of the block?

Cheers
Paul