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Update, found the problem, balance shaft sprocket was shot, resulting in the the toothed cog having just small rounded stubs and snapping in half, the chain which drives both the balance shaft and oil pump was slipping around and generally sounds shocking, New parts fitted where balance shaft...

Fsi pump bearing? Daft question but where would I find that and how would I go about checking it if it's worn?

Hi all, daft question but does the petrol engine have an egr? Also red line starts at 7000. Will this just be a case of starting to change out parts untill the noise goes away?

Good afternoon, I'm hoping some one can help me or point me in the right direction, I have an Audi a4 2.0l TFSI Quattro and I'm getting a really strange noise from the engine, when running a idel it sounds fine but when it is revved up and as soon as it passes 4000 rmp the engine tone changes, (...