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Knocking sound
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plocker
 


Member Since: 14 Mar 2016
Location: Preston
Posts: 828

United Kingdom 2005 Discovery 3 4.4 V8 HSE Auto Bonatti GreyDiscovery 3
Knocking sound

Not sure where it is coming from, also snapped bonnet cable so it is really Censored me off today!

As soon as I find a Q7 its going for sale.

Any thoughts on the noise?

https://youtube.com/shorts/hs4sYF9voJI?feature=share
 05 V8 HSE Bonatti Grey 

Last edited by plocker on 11th Mar 2023 2:13 pm. Edited 1 time in total 
Post #23294098th Mar 2023 10:59 pm
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KPTV8
 


Member Since: 05 Feb 2012
Location: Itinerant !! (Scotland/Donegal)
Posts: 139

Scotland 2010 Discovery 4 5.0 V8 HSE Auto Nara BronzeDiscovery 4

Hi Smile)

Assuming the bonnet cable inside the LH footwell still moves/slides then best place to start looking is remove NS headlight and feel inside/upwards through the empty recess for parted cable ends. Shout if you can't see what needs done. (This assumes you've released bonnet by squeezing-out the grill which then gives access to prise aside the L & R catches)

Re. the noise it seems more a rattle than a deep clonking so maybe your crank and rods are OK. Pull off the cover and listen to the L & R bank, see if sound seems to come from either camshaft ?

My knee-jerk would be a bearing on an ancillary off the fan belt - alternator, water pump, steering pump, fan. If you pop off the belts and run the engine briefly you'll see if the noise stops or not. Keep the loose belts WELL OFF the bottom pulley, it can snag there with sudden dangerous results.

Have you been losing water or fluids ?
  
Post #23294479th Mar 2023 1:34 pm
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KPTV8
 


Member Since: 05 Feb 2012
Location: Itinerant !! (Scotland/Donegal)
Posts: 139

Scotland 2010 Discovery 4 5.0 V8 HSE Auto Nara BronzeDiscovery 4

This isn't MY old grey V8 is it ? Reg. H15 CYS ? Sold approx. Jul 2021.
  
Post #23294489th Mar 2023 1:39 pm
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plocker
 


Member Since: 14 Mar 2016
Location: Preston
Posts: 828

United Kingdom 2005 Discovery 3 4.4 V8 HSE Auto Bonatti GreyDiscovery 3

No its FE05 CWR
 05 V8 HSE Bonatti Grey  
Post #23294509th Mar 2023 1:41 pm
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plocker
 


Member Since: 14 Mar 2016
Location: Preston
Posts: 828

United Kingdom 2005 Discovery 3 4.4 V8 HSE Auto Bonatti GreyDiscovery 3

KPTV8 wrote:
Hi Smile)

Assuming the bonnet cable inside the LH footwell still moves/slides then best place to start looking is remove NS headlight and feel inside/upwards through the empty recess for parted cable ends. Shout if you can't see what needs done. (This assumes you've released bonnet by squeezing-out the grill which then gives access to prise aside the L & R catches)

Re. the noise it seems more a rattle than a deep clonking so maybe your crank and rods are OK. Pull off the cover and listen to the L & R bank, see if sound seems to come from either camshaft ?

My knee-jerk would be a bearing on an ancillary off the fan belt - alternator, water pump, steering pump, fan. If you pop off the belts and run the engine briefly you'll see if the noise stops or not. Keep the loose belts WELL OFF the bottom pulley, it can snag there with sudden dangerous results.

Have you been losing water or fluids ?


Thanks, I will try and pop the headlight in my quest to open the bonnet.
 05 V8 HSE Bonatti Grey  
Post #23294519th Mar 2023 1:42 pm
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KPTV8
 


Member Since: 05 Feb 2012
Location: Itinerant !! (Scotland/Donegal)
Posts: 139

Scotland 2010 Discovery 4 5.0 V8 HSE Auto Nara BronzeDiscovery 4

LMK (PM perhaps) if you can't get the grill(e ?) out, there's a trick with a wooden spatula, like a stiff wooden scraper you'd find in a kitchen.
I did this recently with a D4, I'm pretty sure the clips at the TOP are the same D3 vs D4, bottom clips are different D3 vs D4 but in both cases from memory bottom clips just pop out pulling by hand.
Once the grill(e ?) is out then opening the bonnet is MUCH easier !!
  
Post #232953710th Mar 2023 5:19 am
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plocker
 


Member Since: 14 Mar 2016
Location: Preston
Posts: 828

United Kingdom 2005 Discovery 3 4.4 V8 HSE Auto Bonatti GreyDiscovery 3

Thank you everyone for your advice and PM's. I cant open it I dont have the talent or tools.
 05 V8 HSE Bonatti Grey  
Post #232957610th Mar 2023 10:41 am
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