Does Your V6 Rattle?

[dobbey]

When the car is started for the first time in the day, there is a little rattle coming from the engine/exhaust. It goes away after about a minute, its just while the engine is cold. Does anyone else's V6 do this? I've looked on the Passat R36 forum and everyone says its normal :?

Cheers

[ddyer79]

Having read your post I have been specifically listening out for a rattle, but I do not have one.

Thoughts:

My car is always garaged, not sure whether that makes a difference - not as cold as being left outside ?.

Also it is a 2012, so perhaps they've found out what caused it.

Oil, I am on long service interval (19K ish) and I notice it uses different oil.

Still loving the car - every journey is a pleasure.

[dobbey]

Thanks

I initially thought it may have been a loose baffle in the exhaust, but after looking on the R36 forum, they say its engine.

My car is on variable servicing and hasn't had a service yet. It's only just reached the recommended mileage for an oil change, though its still clean.

A trip to the dealers may be on the cards to see if an oil change fixes it, if not, I'll ask their opinions, or just live with it.

Merry Christmas

Edited 24 December, 2012 by dobbey

[sww]

Yes, my V6 rattles for the first 30 seconds to 1 min on a cold start too. I think the noise comes from the manifold / engine but not sure it is really a rattle, just a different noise as the car warms up.

Merry Christmas too.

[dobbey]

Ill try and get a video tomorrow because the noise is really hard to explain. It's sort if like a jingly rattley resonance

Edited 24 December, 2012 by dobbey

[dobbey]

Here's a video I took. It's not very good, but you can hear the rattle. It's definetly nearer the engine (it goes quieter at the end of the vid)

I'm just going to check the oil now

Merry Christmas

[sww]

Dobbey, I found hard to tell from your video if the noise was the same as mine so I have tried to attach a video of my cars start up. You should notice a noticeable difference in engine noise at about 35 sec.

If there is a competition of most boring video posted we should do very well!

http://s1146.beta.photobucket.com/user/stevenwwilson/media/M4V04564_zps72bc1c1d.mp4.html

Edited 26 December, 2012 by sww

[dobbey]

Surely our videos are very interesting considering they have the startup of a roaring (read - rattling) V6

[sww]

Ok I think I have a direct link working now after many attempts

Edited 26 December, 2012 by sww

[Black vRS Oct]

The 1.8t had a secondary air pump that pushed in fresh air for lower start up emissions. Wonder if it is a simlar system? Used to make a strange noise on start up for a minute or so.

[dobbey]

I think the videos have the same noise in them. It sounds like the rattle goes towards the end of yours. In my video you can here the rattle best at 0:12

[bill2]

all new cars have hydraulic valve adjusters you get this noise on start up be four the oil gets up to the valves to adjust the valve clearances.

bill