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Faint knock sound when applying throttle.

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  • Faint knock sound when applying throttle.

    Hi guy's

    I purchased a 2005 Golf Mk5 TDI a few weeks ago & I've been noticing a faint Knock sound when applying the throttle on & off.
    It only happens when I press the accelerator, it makes a one off Knock sound. Example, Tap the accelerate pedal (Knock) foot off the accelerator re-apply foot on accelerator pedal again (Knock). I think the sound is coming from the front of the car, I'm almost certain it's not the engine.

    That knock does not happen from take off though, only when coasting along and lightly pressing the accelerator on and off.
    If I press the throttle extremely soft I can't hear it all, It really sound when traveling at higher speeds on the Highway etc...

    It's a strange one, can't figure it out. I'm guessing something maybe loose. I was thinking Engine mounts, Sub-frame, Bushes, Control arms etc..
    Has anybody had a similar experience? Suggestions would be great.

    Thanks

    Eran
    Last edited by Eran; 14-11-2013, 09:51 PM.
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