Golf GT TDI 150 Engine Knocking / Tapping / Rocking Noise

**keawe** · 27-02-2008,12:54 AM

Hi guys, I am new to this forum.

I have got a problem of my golf GT TDI 150 Engine.

The funny knocking sound exactly the same as the engine shown in the video I found.

http://smg.photobucket.com/albums/1003/Matt.H/VW%20Golf%20GTTDI%20150/?action=view&current=P1000569.flv

It will only happen when the engine is cold, it cures itself when the engine warms up or at 70C-80C. It seems to play in a special rhythm (like having a party inside) when the

tapping noise happen.

I have been told by different people with different possible causes. But before I do any further action. i would like to ask for you guys advice first. cause it always helps.

Thanks very much!!!!

**micklepie** · 03-03-2008,10:17 PM

I am interested to find out too, mine does exactly the same, it does it in cold weather but once its warmed up stops!!! Mine is also a Golf mk4 GT TDI ARL engine code (PD150)

**Crasher** · 03-03-2008,10:41 PM

Sounds like DMF failure to me.

**BlackSmoke** · 04-03-2008,12:01 AM

Had a similar problem with seat - was related to Dual Mass Flywheel (DMF) - replaced under warranty and had no further problems.

**keawe** · 04-03-2008,02:37 AM

Originally Posted by Crasher

Sounds like DMF failure to me.

Hi, Thanks for your reply.

It might be a silly question to you, but why would the knocking happen only when the car is cold. I would assume the knock will presist if that is cause by the flywheel, coz the flywheel will stay the same no matter what temperature it is in.

I might be wrong, thats just what I guess.......

Thanks!

Keawe

**andy reeve** · 19-05-2008,06:47 PM

need some advice on my TDi Anniversary re knocking noise...i'd like to speak to crasher but need 5 posts or more!!

**andy reeve** · 19-05-2008,06:50 PM

I've got exactly the same problem. need to know if its DMF failure or cam & lifters????

**andy reeve** · 19-05-2008,06:55 PM

I've just watched the video link & i'm pretty sure thats what's wrong with my car...do you know if engaging the clutch is a sure way to tell if it's DMF is failing???

**Monkey117SE** · 19-05-2008,09:13 PM

If you depress the clutch and the noise goes, or reduces significantly, its the DMF.

**Nutty** · 20-05-2008,12:13 AM

Originally Posted by keawe

why would the knocking happen only when the car is cold. I would assume the knock will presist if that is cause by the flywheel, coz the flywheel will stay the same no matter what temperature it is in.

Keawe

If the flywheel were to expand when it became warm or hot, it may well trap any loose components..

It also sounds like a starter motor that is loose and catching the ring gear, is that your car in the video ? That ones been on a rolling road and mapped, so it would be fair to assume the clutch has had some grief from the BHP increase.