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Thread: Loud engine...?

  1. #1
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    Loud engine...?

    I have a 2.5 V6 TDi and the engine is very loud, almost sounds just like a tractor. I know that's very vague but I didn't know if it's a common problem.

    Its not a tap tap or a knock just a loud engine!!

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    high miles?

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    spartacus 68's Avatar
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    The V6 is the sweetest noise you'll ever hear. Yes it can be a bit tractor-like at start up, but hey you can't have everything. Do you still have the engine under-tray in place? There is sound insulation foam padding on it, and there's the plastic V6 engine cover, again with foam insulation.
    2002 A2 1.4 TDi SE (125k)
    2001 A4 2.5 TDi Avant Quattro Sport (155k)
    1995 80 TDi Avant SE (175k) Sold

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    Manifolds cracked?

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    Mine is a little noisy on tickover, but as stated before, check all covers in place.
    When driving the engine is VERY quiet, only noticable when pushed hard. And I have removed the pre cat and main cat.

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    Loud engine...?

    It's only on 130,000 miles with lots of history and the engine cover and under bonnet foam are both present - although the engine cover isn't screwed down. Would that make the difference.

    It doesn't sound like a cracked manifold, like I said its more of a diesel tractor loudness. It's having it's cambelt done at the moment and I'll try and get a video on its return.

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    Mrs PaulFs' Avant has this issue, and I've still not cured it!
    My saloon only has that 'crack' when cold for a couple of minutes.

    Other causes I have found so far are the Turbo Actuator rod length/stop screw adjustment (I'm nearly done adjusting the Avants' and will do a 'how to' when I'm done), Coolant Temp Sensor causing it to be too far advanced in 'cold mode', the return line system - copper washers and/or pipes at the injector bleed offs, pump timing - if it's too far advanced, you can get a 'bark' and pump advance solenoid.
    1999 A4 B5 1.9 TDi FWD Saloon, Green SOLD
    2000 A4 B5 2.5 TDi Quattro Avant, Maroon, 'Panzer' Plated (currently sporting wrecked engine - and gearbox )
    2000 A4 B5 2.5 TDi Quattro Saloon, Blue, 'Panzer' Plated, Cruise Control retrofitted, OEM 6 Disc Changer retrofitted
    2006 A6 Allroad 3.0 TDi Blue, awaiting stuff to be done!

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    Loud engine...?

    Keep me updated Mr. F!

 

 

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