Member Since: 08 Nov 2016
Location: Maldon, Essex
Posts: 515
Suspension air pipe blanks
Im chasing the dreaded "gallery too slow to pressurise "fault. Having rebuilt all three solonoid valve blocks with no improvement, I'm thinking to start sectioning off the system to try and narrow the fault down. The compressor is a Hitatchi type and is only around 4 years old, it has a bit of puff with thumb over end of disconnected outlet pipe but don't have any way to compare with new!
For those who have done this before, how can I make / where can I source some blanks? I'm thinking I need a combination of fittings to blank off pipes and plugs to balck off the centre valve block (or possibly even some bypass loops?
Need these asap as only a few days left to fix the car before needed for holiday!Not such a Disco Newbie now!
IID BT
5th Feb 2023 6:43 pm
Pete K
Member Since: 15 Jan 2016
Location: GL
Posts: 10363
Leak in air tank ?
Spray soapy water on tank and then start car and look for bubbles
5th Feb 2023 7:06 pm
Mikeyb
Member Since: 08 Nov 2016
Location: Maldon, Essex
Posts: 515
Sorry no, should have said new air tank also 4 years ago, currently sitting on the deck having been sprayed with no signs of leakage.Not such a Disco Newbie now!
IID BT
5th Feb 2023 7:09 pm
Mikeyb
Member Since: 08 Nov 2016
Location: Maldon, Essex
Posts: 515
Compressor is also irritating - only runs for 10 secs or so before yellow warning lamp illuminates and it cuts out. Will reset with IID but does same again.Not such a Disco Newbie now!
IID BT
5th Feb 2023 7:11 pm
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Have you looked at the live values for the compressor and suspension on the IID Tool?
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6th Feb 2023 12:46 am
pwheeldon
Member Since: 15 Jan 2020
Location: West Yorks
Posts: 1446
I'd search for Gstuarts thread on this as he pretty much rebuilt his suspension and carries out pressure tests to find faults.Discovery 4 GS 2009 Auto Stornoway Grey
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6th Feb 2023 5:24 am
loanrangie
Member Since: 18 Jun 2017
Location: Melbourne
Posts: 600
Mikeyb wrote:
Compressor is also irritating - only runs for 10 secs or so before yellow warning lamp illuminates and it cuts out. Will reset with IID but does same again.
Gallery filling slowly can also bee a blocked filter in the compressor, you say hitachi type so does that mean its a cheap knockoff - that is likely your problem.
6th Feb 2023 10:22 am
Mikeyb
Member Since: 08 Nov 2016
Location: Maldon, Essex
Posts: 515
Just checked, it was a Dunlop from the LR Centre, just under 4 years old but had not done massive miles.
I too am starting to suspect it, pressure can be felt if you put a thumb over the outlet when running but I have no benchmark new to compare it with.
I did have a quick look inside the dryer, without digging or emptying, the glass beads under the felt pad looked whole and relatively dust free.
IID not showing a lot of pressure when looking at live gallery pressure - circa 200 kPa when running, dropping back to 100 kpA or so when cutting out after 10 secs.
I don't want to splash out on a new one without being certain that I have no leaks or other faults.Not such a Disco Newbie now!
IID BT
6th Feb 2023 8:18 pm
Flatlander
Member Since: 20 Jul 2015
Location: Here
Posts: 575
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Last edited by Flatlander on 21st Feb 2023 11:10 pm. Edited 1 time in total
6th Feb 2023 9:01 pm
Mikeyb
Member Since: 08 Nov 2016
Location: Maldon, Essex
Posts: 515
Good call on the exhaust port, I had forgotten about that, thanks.
I can't visulise an air inlet pipe whilst sitting at my nice cosy computer, even after looking up the schematic?
EDIT: Ah, i've read a bit further and got it, thanks. Will try tomorrow. Is the filter a routine service item?Not such a Disco Newbie now!
IID BT
6th Feb 2023 9:46 pm
gstuart
Member Since: 21 Oct 2016
Location: kent
Posts: 13635
pwheeldon wrote:
I'd search for Gstuarts thread on this as he pretty much rebuilt his suspension and carries out pressure tests to find faults.
Bless u and indeed was certainly a saga that’s for sure , worse still I really enjoyed going through it step by step
6th Feb 2023 11:41 pm
gstuart
Member Since: 21 Oct 2016
Location: kent
Posts: 13635
Mikeyb wrote:
Good call on the exhaust port, I had forgotten about that, thanks.
I can't visulise an air inlet pipe whilst sitting at my nice cosy computer, even after looking up the schematic?
EDIT: Ah, i've read a bit further and got it, thanks. Will try tomorrow. Is the filter a routine service item?
Hiya
Plus 1 what’s been mentioned , also wished to share some data and link which I really hope is useful
just checked in that thread where I linked to several parts etc , see some don’t work anymore, if u get stuck for wanting bits etc plse feel free to give me a shout and will find them for u
Click image to enlarge
Click image to enlarge
Click image to enlarge
Click image to enlarge
6th Feb 2023 11:46 pm
Mikeyb
Member Since: 08 Nov 2016
Location: Maldon, Essex
Posts: 515
Much appreciated Gary, thanks very much. I had been looking for your thread following recommendation from someone else! This forum is a great resource but due to its vast and varied content is not always easy to find exactly what you are looking for easily!
Alas I'm running out of time, with a ferry beckoning in a few days time. Will do some more head scratching today but very little time left to wait for parts to arrive Not such a Disco Newbie now!
IID BT
7th Feb 2023 8:16 am
Flatlander
Member Since: 20 Jul 2015
Location: Here
Posts: 575
...
Last edited by Flatlander on 21st Feb 2023 11:10 pm. Edited 1 time in total
7th Feb 2023 8:20 am
gstuart
Member Since: 21 Oct 2016
Location: kent
Posts: 13635
Mikeyb wrote:
Much appreciated Gary, thanks very much. I had been looking for your thread following recommendation from someone else! This forum is a great resource but due to its vast and varied content is not always easy to find exactly what you are looking for easily!
Alas I'm running out of time, with a ferry beckoning in a few days time. Will do some more head scratching today but very little time left to wait for parts to arrive
Ur so very welcome , always nice being able to pass it on for when I had to virtually tear my entire suspension system apart after I just bought it due to so many bodges etc , it had more leaks than a colander , lol
Indeed as suggested check the air inlet filter that sits in the boot side locker , drivers side , enclosed a picture , it’s the round black canister , bottom left of the picture , can access it via the small removable hatch , it can be awkward getting to the filter material inside ,
must confess a quick cheat is to pull off the bottom pipe off the compressors end cap , at least then if it doesn’t make any difference u can just push the pipe back on
The top dryer outlet is ur exhaust so only time u should feel pressure coming out is when it vents the excess pressure
There are a few options with regards to the compressor , use ur gap iid to watch the live data to see if it reaches the Psi data from the spec sheet , or to completely isolate the compressor from the rest of the system is to remove it
Then placing it onto a bench , using a 12 volt battery , turn it on and see if u can very easily block the outlet with ur finger , ideally a pressure gauge is better but your be able to tell of the pressure is extremely poor
If that’s the case really need to check the dryer , know u said u had a quick look but never know some material might have clumped together and blocked the inlet inside at the bottom of the dryer
Silica can be dried out in the microwave
U can get rebuild kits but personally I fitted a new compressor , along with using stainless steel nuts/ bolts to ensure they came undone next time
Before I forget if u do remove the compressor u might need new clips / bolts for the bracket that fixes to the chassis , plus of course u might also have a leak in the system , but indeed that takes time to go through the system
Hope that gives u a head start seeing u haven’t got much time , fingers crossed can get it done before ur booked to go away
Ps, just thought seeing u have limited time wonder if it’s worth ordering a new compressor just in case , if it’s not used at least u have one as a spare
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