So, my 300tdi is noisy as hell in the cab with a drone or hum from the front end. Only after 25-30mph does this noise appear! Also it is only when I am giving it throttle, when i slack off slightly or i am going downhill with no throttle the noise dissapears. Took a video today but the camera doesnt really pick it up that well! Could it be the front diff? at first i thought the gearbox may be low of oil, so i checked it & the front diff & both have sufficent oil levels. HELP!!!! the noise is really a pain in the :mooning:

20131030_160443.mp4 - YouTube

before condemning anything make sure the fixing points for your air filter have not failed it can sound like the engines shagged

THEengineer said:

before condemning anything make sure the fixing points for your air filter have not failed it can sound like the engines shagged

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Mine are and mine does, but it isn't or at least I think its not

warrior said:

Mine are and mine does, but it isn't or at least I think its not

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zip tied mine down,noise fixed