Yes its the injector side, and is more of a tick, however its a heavy tick. or even a light knock! haha Ill have a look into the injector washers and see where it goes from there! Thanks! :)

Hello, New here Heres my 300tdi After a bit of help: Iv got a knocking noise from the front top end of the engine (300tdi) Starts about 1500rpm upwards Iv checked the rocker clearances - all ok Pretty sure its not the vacuum or lift pump Changed the oil Cant see any leaks from any gaskets...