Focus Zetec 2.0

I have very recently purchased a auto zetec 2.0. The car has been diagnosed several times but now it's a sure pinging noise from the engine which the manufacturer now admits. They have all put there hands up now and waiting for Europe to answer(almost 10 days). I'm very concerned about what can be done as this is a bug in the system so I've been told.

Can anybody help with some information, would be great.

Thanks