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Strange ticking noise? Audio link included
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karlth
 


Member Since: 08 Nov 2007
Location: Iceland
Posts: 10

2007 Discovery 3 TDV6 S Auto Java BlackDiscovery 3
Strange ticking noise? Audio link included

D3, 2007 TDV6.

Started the engine and heard this strange ticking noise. Engine response is normal but the sound has me worried so I've parked it for the time being.

(Uploaded audio) http://vocaroo.com/i/s0uTd50PyS56

Any ideas on what might be causing it?  
Post #150092113th Jul 2015 2:12 am
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lynalldiscovery
 


Member Since: 22 Dec 2009
Location: Maidstone
Posts: 7274

United Kingdom 2006 Discovery 3 TDV6 Metropolis LE Auto Bonatti GreyDiscovery 3

Recent post where the guys cambelt was coming apart and making a noise, cant remember if it was hot or cold?
Im not saying its that just something to look at  
Post #150092213th Jul 2015 2:17 am
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toastboy
 


Member Since: 01 Aug 2014
Location: Cambridgeshire
Posts: 6

England 2008 Discovery 3 TDV6 HSE Auto Java BlackDiscovery 3

Does it stop when you turn off the ICE? Does it only happen when the AUX input is selected? I leave my iPhone cradle plugged into AUX and I get a similar noise from the speakers when there's no phone in the cradle. Connect the phone or turn off the amp and it goes away for me.  
Post #150093913th Jul 2015 7:17 am
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CUCO
 


Member Since: 27 May 2011
Location: Spain & Oleee!!!
Posts: 609

Spain 2010 Discovery 4 3.0 TDV6 HSE Auto Nara BronzeDiscovery 4

Is the oil at correct level?

Oil filter well in place?

Sounds diferent from right to left bank of cylinders?

Does the sound changes if warm engine?

Any obvious leak?  
Post #150095613th Jul 2015 8:33 am
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IOM man
 


Member Since: 03 Nov 2013
Location: Peel
Posts: 303

Isle Of Man 2010 Discovery 4 3.0 TDV6 HSE Auto Nara BronzeDiscovery 4

My cam belt that was recently done was starting to shred - initially when diagnosing the noise I thought it only did it when warm but it was there all a time, quiet at first and gradually got louder over 10 days

I started diagnosing by running it with the fan belt removed

Oil and filter change (LR filter)

I removed the insides of my EGR valves

Ran injector cleaner through it

Disconnected injectors one by one (DO NOT DO THIS WITH THE ENGINE RUNNING)

Done the above and the noise was still there, so then decided I will have to dig deeper and that's when I found the shredded belt that was hitting the plastic cover 😃

It might be something different on yours but worth checking just in case 👍 Current:
2010 Discovery 4 HSE TDV6
2020 Audi Q2 TSFI 40 Aline Quattro Black Edition
2006 Audi RS4 4.2 V8 - Toy in the garage Smile

Gone but not forgotten:

2006 Range Rover Sport HSE TDV6
2018 Lexus NX 300 F Sport Hybrid
2005 Discovery 3 HSE TDV6
2015 Discovery HSE Lux
200 Discovery TDI
300 Discovery TDI
Land Rover 90 2.5 Diesel
Series III SWB Land Rover 2.25 diesel
TD4 Freelander Kalahari
1.8 petrol Freelander  
Post #150096413th Jul 2015 8:58 am
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CUCO
 


Member Since: 27 May 2011
Location: Spain & Oleee!!!
Posts: 609

Spain 2010 Discovery 4 3.0 TDV6 HSE Auto Nara BronzeDiscovery 4

Did the cam belt sound like the audio clip that is posted by karlth?  
Post #150103813th Jul 2015 11:48 am
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IOM man
 


Member Since: 03 Nov 2013
Location: Peel
Posts: 303

Isle Of Man 2010 Discovery 4 3.0 TDV6 HSE Auto Nara BronzeDiscovery 4

On tick over it wasn't as loud as the noise on the audio file, but when I revved it up and held the revs at 2500 rpm it sounded similar. I was starting to think that it was a cam follower or small end, as the noise was coming from the top right hand bank of cylinders

When I found the fault it then made sense as the split in the cam belt would have had further to travel around the cam and idlers pulleys, so the noise/click wasn't as often as what a cam follower or small end would have been - hope that makes sense

I don't know why but the shredded cam belt was only hitting the cam cover on the top right hand side Current:
2010 Discovery 4 HSE TDV6
2020 Audi Q2 TSFI 40 Aline Quattro Black Edition
2006 Audi RS4 4.2 V8 - Toy in the garage Smile

Gone but not forgotten:

2006 Range Rover Sport HSE TDV6
2018 Lexus NX 300 F Sport Hybrid
2005 Discovery 3 HSE TDV6
2015 Discovery HSE Lux
200 Discovery TDI
300 Discovery TDI
Land Rover 90 2.5 Diesel
Series III SWB Land Rover 2.25 diesel
TD4 Freelander Kalahari
1.8 petrol Freelander  
Post #150107013th Jul 2015 1:26 pm
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karlth
 


Member Since: 08 Nov 2007
Location: Iceland
Posts: 10

2007 Discovery 3 TDV6 S Auto Java BlackDiscovery 3

It was the "Cylinder 6" problem.

Total engine rebuild needed. Sad  
Post #15261998th Sep 2015 1:08 pm
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