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air leak diagnosis
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stav
 


Member Since: 14 Nov 2013
Location: Athens
Posts: 178

Greece 2005 Discovery 3 TDV6 S Auto Unknown ColourDiscovery 3
air leak diagnosis

Hi all,

trying to find a reason why the disco sinks when parked overnight, i also get an amber suspension light and codes c1130 and c112f on iidtool.

After removing fuse26, the car does not sink at all, even if parked for 2-3 days.

would that imply that the leak is not from the springs?

can i get an indication of whats going on , by reading the live values in iidtool maybe?

Thanks

Stavros
  
Post #17579154th Jan 2017 7:26 pm
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geoffsnook
 


Member Since: 13 Jun 2014
Location: south wales
Posts: 3169

Wales 

Stavros i dont think you will get anywhere with your thoughts of the IDD tool as i dont think there is anywhere on the tool to read live values or find leaks but i do stand to be corrected you need to start looking around the air compressor and the air tank with some sort of fairy liquid substance to find your leak or at least eliminate them from the process it really is a suck it and see process of eliminating each and every component from the list of parts Thumbs Up
 Discovery 3 se gone
Range rover sport supercharged here:) 
 
Post #17579184th Jan 2017 7:33 pm
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stav
 


Member Since: 14 Nov 2013
Location: Athens
Posts: 178

Greece 2005 Discovery 3 TDV6 S Auto Unknown ColourDiscovery 3

will certainly check with soap and water, just trying to understand how the system works, and if i should rule out the springs, due to the fact that its not sinking without the fuse Confused
  
Post #17579204th Jan 2017 7:37 pm
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geoffsnook
 


Member Since: 13 Jun 2014
Location: south wales
Posts: 3169

Wales 

No they may be leaking you also have front and rear air valve blocks that are prone to leak do a search on here for them Thumbs Up
 Discovery 3 se gone
Range rover sport supercharged here:) 
 
Post #17579234th Jan 2017 7:39 pm
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stav
 


Member Since: 14 Nov 2013
Location: Athens
Posts: 178

Greece 2005 Discovery 3 TDV6 S Auto Unknown ColourDiscovery 3

have done a lot of reading , and i understand that if for example the front valve block was leaking, the car should be leaning forward in the morning with the fuse 26 out. thats not happening and thats why im so confused
  
Post #17579264th Jan 2017 7:43 pm
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BLFarrar
 


Member Since: 02 Aug 2006
Location: Deepest, Dankest, Darkest, Dingiest......Le Halifax, West Yorkshire...with strong links to Ireland
Posts: 6222

France 2006 Discovery 3 TDV6 HSE Auto Lugano TealDiscovery 3
I thought mine sank....

I used an ultrasonic air leak detector (made by Alpine.....not car audio people)
This hears the noise of minute leaks from massive distances & above background noises

http://www.alpine-components.co.uk/pdfs/pr...be-100.pdf
These aren't low cost pieces of kit.....but are the dogs dangles in operation.

https://www.amazon.co.uk/s/?ie=UTF8&ke...&ref=C
Cheap & cheerful ones....
http://leak-detector.co.uk/products/
Industrial ones

I didn't find any leaks from anything....Disco parked switched off......battery disconnected......engine on at various heights......the issue went away by itself (as they often do)
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Post #17579624th Jan 2017 8:03 pm
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geoffsnook
 


Member Since: 13 Jun 2014
Location: south wales
Posts: 3169

Wales 

stav wrote:
have done a lot of reading , and i understand that if for example the front valve block was leaking, the car should be leaning forward in the morning with the fuse 26 out. thats not happening and thats why im so confused


It also can lean from side to side as it splits the air left and right a ramp would be a good place to start with it in the air and you looking while its running to see if you can hear/sea anything obvious Thumbs Up
 Discovery 3 se gone
Range rover sport supercharged here:) 
 
Post #17579684th Jan 2017 8:08 pm
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geoffsnook
 


Member Since: 13 Jun 2014
Location: south wales
Posts: 3169

Wales 

Have a look through this might help you understand the different fuses and what they do as removing one fuse only stops power to the compressor Thumbs Up

http://www.disco3.co.uk/forum/topic46737-15.html
 Discovery 3 se gone
Range rover sport supercharged here:) 
 
Post #17579734th Jan 2017 8:15 pm
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stav
 


Member Since: 14 Nov 2013
Location: Athens
Posts: 178

Greece 2005 Discovery 3 TDV6 S Auto Unknown ColourDiscovery 3

will do , thanks alot!!!
  
Post #17579984th Jan 2017 8:43 pm
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Pete K
 


Member Since: 15 Jan 2016
Location: GL
Posts: 10368

England 2005 Discovery 3 TDV6 HSE Auto Rimini RedDiscovery 3

Best think to do it's clean out the dryer on the compressor to get rid of the white dust.

then Order these

http://www.ebay.co.uk/itm/Discovery-Air-Su...rmvSB=true

and then clean out the front valve block and replace the seals.


If that doesn't help replace the seals in the middle air valve block
  
Post #17580034th Jan 2017 8:48 pm
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stav
 


Member Since: 14 Nov 2013
Location: Athens
Posts: 178

Greece 2005 Discovery 3 TDV6 S Auto Unknown ColourDiscovery 3

i will try this as well thank you
  
Post #17580204th Jan 2017 9:11 pm
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stav
 


Member Since: 14 Nov 2013
Location: Athens
Posts: 178

Greece 2005 Discovery 3 TDV6 S Auto Unknown ColourDiscovery 3

sprayed the springs, valve blocks, compressor area with soapy water, but no visible leaks Confused

Any suggestions what to do next?

Thinking of getting the compressor out and clean up the dryer, and replace the exhause valve....i already have this part, thats why,
  
Post #17603539th Jan 2017 12:49 pm
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Pete K
 


Member Since: 15 Jan 2016
Location: GL
Posts: 10368

England 2005 Discovery 3 TDV6 HSE Auto Rimini RedDiscovery 3

Yes that is a good idea. I suggested it before too

Valves can also leak internally (which won't be shown by soapy water)

Which is why I said you need to clean out the while dust, and may as well change the seals too

Pete K wrote:
Best think to do it's clean out the dryer on the compressor to get rid of the white dust.

then Order these

http://www.ebay.co.uk/itm/Discovery-Air-Su...rmvSB=true

and then clean out the front valve block and replace the seals.


If that doesn't help replace the seals in the middle air valve block
  
Post #17603829th Jan 2017 1:32 pm
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stav
 


Member Since: 14 Nov 2013
Location: Athens
Posts: 178

Greece 2005 Discovery 3 TDV6 S Auto Unknown ColourDiscovery 3

thanks for that.

using iidtool live values would a valve show up as open , so i can narrow down which out of the 3 valve blocks has the problem?
  
Post #17604369th Jan 2017 2:27 pm
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geoffsnook
 


Member Since: 13 Jun 2014
Location: south wales
Posts: 3169

Wales 

Why dont you just look through the live values and see if anything actually shows up or email pat at gap to see if they have anything in there armour Thumbs Up
 Discovery 3 se gone
Range rover sport supercharged here:) 
 
Post #17604389th Jan 2017 2:31 pm
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