Diesel Rattle on Idle - Clutch Issues?

[DannyScotland]

Wonder if someone has the same or can advise on a problem I have with my 2 diesel with manual transmission.

My car seems to have a rattle on idle. It reverberates throughout the car and is especially bad when the engine is not up to temperature. I initially thought it was an engine issue however, through the process of elimination I’ve found it’s something to do with the clutch.

When I come to a stop, if I push the clutch hard right against the engine bay, (most of the time) the rattle doesn’t happen and it idles as smooth as ever however, as soon as I let it out even a fraction of an inch it starts the vigorous rattle. If I come to a stop and don’t push the clutch hard against the wall, the rattle is instant. It’s almost as if the clutch doesn’t full detach from the engine.

Any ideas on a) what it is or b) how it can resolved – any feedback would be much appreciated

 

[breaking badly]

Perhaps the dual-mass flywheel. How many miles?

 

[DannyScotland]

Sorry should have said - circa 31k

 

[The Fed]

Clutch completely disengaged = no rattle but slightly = rattle? Since I don't know much about dual mass flywheels other than it's two different materials, it sounds like they're loose or separating. But that makes no sense to me since it seems to me that with the clutch completely disengaged it would be worse.

 

[breaking badly]

Not necessarily. When for example the DMF bearings are worn out it'll rattle
without any 'load' applied, say when the clutch is disengaged.

crankshaft > DMF > clutch > gearbox

 

[PouncingPanzer1]

I would put a dollar on a DMF. Mine in my 2012 TDI just started to chatter at 98k right before it got bought back. It was only with the clutch engaged.

 

[plainsight]

Mine does the same. I'm at 13k miles though. Has done it since I've had the car. Dealer said it was normal lol. I'd been saying up for about 5 months now for a rainy day fund for when my clutch goes out. Going to put a stage 2 in there, a SMF and call it a day.

Sent from my SAMSUNG-SM-N910A using Tapatalk

 

[Geomets]

It could be the DMF or the springs of the clutch plate are going bad.Diesel engines have higher torque and VW is known for installing weak clutches.