2006 TDI Engine Thud Noise

[firedick]

When you are driving along or stationary, if you just tap/blip the accelerator pedal there is like a thud (or light hollow bump) coming from the engine. Its not the suspension or clutch, as i say it also happens when stationary. the noise is hard to describe, it is only for a split second as you just touch the accelerator. Any ideas? It doesn't sound anything major, but i'm no mechanic.

[RichieG]

It's the engine rocking in it's mounts due to the sudden torque - perfectly normal.

The solution is not to blip the throttle........

[firedick]

but if you floor it, then it doesn't happen

[RichieG]

Because when you floor it, there's not a sudden wave of torque, immediately followed by it subsiding, so the engine doesn't rock back and forth, thus no thud.......

[D.Dj.]

Flywheel, very coomon problem on TDI engines.
There is a service action on replaceing the flywheel.
Go to authorised dealer to inspect it.
I have to many problems with this. Fix this problem now or wait to get even worst, almost you cant drive the vehicle.

[firedick]

I've just realised sorry, the car is actually a SDI, will this still be the case with the flywheel? Is the flywheel anything to do with the clutch?