Before I turn in for the night, just time to ask one question. On the black plastic cam covers on the 2L Zetec, there are four vertical threaded holes with what looks like brass inserts. One next to each plug cap. I'm thinking about using these to support an aluminium water shield over the plugs and coil pack. But before I spring into action, what do these do on the Fords? They clearly have a purpose.
