hi just a tiny bit of advice if possible, I have a vibration coming from the general engine area and i want to rev the motor while i'm under the bonnet to see if i can locate it, the problem is i can't find where the throttle cable goes into the engine, it's usually obvious but with the Octavia i'm stumped. Thanks Chaps. it's an 08 2.0 tdi

Throttle cable? It's all fly by wire these days.

Be a long time looking for that.

Well you know what I mean, I want simply to rev the engine while I'm under the bonnet, there must be a throttle control valve or something I can use to raise the engine rev's.

No there isn't.