Strange metallic noises - Page 2

empa81 · May 2nd, 2019, 17:06

Quote:

Originally Posted by Baffler

Does it only make this noise when first started from cold or on every start of the engine?

If only from cold I'll hazard a guess at it being an exhaust manifold or downpipe gasket. Check all studs are present and look for hairline cracks in the manifold and turbo.

If it happens on every start then it's probably something more sinister, as Clan says, such as the turbo compressor damaged or something failing on the cam belt side.

It seems to be only when cold.

empa81 · May 2nd, 2019, 17:08

Quote:

Originally Posted by Clan

The pulleys don't get dirty in there ..
Well , it seems it is either the variable cam pulley or the turbocharger , I have heard a turbocharger sound like that before ... Try taking the turbo inlet hose off and push and pull the turbine wheel inside , there should be no in and out axial play but there should be a small amount of up and down radial play ..

Variable cam pulley, is that the vanos? to the left of the two upper wheels?
You mean the wheel itself or* the unit that is screwed ontop of the engine?

Clan · May 2nd, 2019, 19:43

Quote:

Originally Posted by empa81

Hmm any way to "disable" the 4wd to see if the noise stops?

there are no driveshafts going round when your noise is occurring ...

empa81 · May 2nd, 2019, 19:59

Quote:

Originally Posted by Clan

there are no driveshafts going round when your noise is occurring ...

Pardon me but what do you mean?

empa81 · May 2nd, 2019, 20:03

Update: took a gamble and drove it to park it at work.
The noise was there as usual at start but 3-4 minutes into the ride it was gone. The car went smooth and everything was as it supposed to be. The oil-pressure lamp came on and off "blinking" sporadically.

Was not a hard drive tho as I didn't dare but 70 km/h was driven at least and I was driving for a total of 10-15 minutes.

I wonder what this darned noise can be

Clan · May 2nd, 2019, 21:01

Quote:

Originally Posted by empa81

Pardon me but what do you mean?

In post #10 above you wanted to disable AWD ...

mopedmick · May 2nd, 2019, 23:26

Maybe there is a clue in the oil light blinking sporadically? ..........

May 2nd, 2019, 20:03	#15
empa81 New Member Last Online: May 5th, 2019 09:10 Join Date: Apr 2019 Location: Stockholm	Update: took a gamble and drove it to park it at work. The noise was there as usual at start but 3-4 minutes into the ride it was gone. The car went smooth and everything was as it supposed to be. The oil-pressure lamp came on and off "blinking" sporadically. Was not a hard drive tho as I didn't dare but 70 km/h was driven at least and I was driving for a total of 10-15 minutes. I wonder what this darned noise can be

May 2nd, 2019, 23:26	#17
mopedmick Junior Member Last Online: Jun 22nd, 2023 10:12 Join Date: Mar 2019 Location: Taunton	Maybe there is a clue in the oil light blinking sporadically? ..........

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