D Special not rising in the front!
  • Register
  • Help
Page 1 of 2 12 Last
Results 1 to 25 of 50
Like Tree13Likes

Thread: D Special not rising in the front!

  1. #1
    1000+ Posts Bad Bertie's Avatar
    Join Date
    Nov 2010
    Location
    Sydney
    Posts
    3,581

    Default D Special not rising in the front!

    My newly acquired D special refuses to rise in the front. I suspect some air got in the system when at once stage she was low on LHM. Today I undid the hose at the tank end and put more LHM into the hose to feed into the pump. A trick Bruce Elsegood told me about years ago, and it worked! but not today on this one. Any other suggestions appreciated.

    Advertisement

  2. #2
    Fellow Frogger!
    Join Date
    Jul 2011
    Location
    Castlemaine VIC
    Posts
    355

    Default

    You would have undid the valve (anticlockwise) to bleed the lines at the regulator but the D Special would need to be bled at the brake caliper, like the ID to expel any remaining air.
    Just a thought.
    All the Best ---- Michael
    Bad Bertie likes this.

  3. #3
    1000+ Posts forumnoreason's Avatar
    Join Date
    Nov 2010
    Location
    Ici.
    Posts
    2,560

    Default

    is it leaking?

  4. #4
    BVH Roger Wilkinson's Avatar
    Join Date
    Oct 2004
    Location
    Warrnambool
    Posts
    2,346

    Default

    If the rear rises and the power steering works, you might have to clean out the front height corrector.

    Roger
    Mort Subite likes this.

  5. #5
    Fellow Frogger! citroenthusiast's Avatar
    Join Date
    Apr 2014
    Location
    Phoenix, Arizona USA
    Posts
    676

    Default

    Or, sometimes you can free it up by running the manual height control lever sharply from highest to lowest position several times.
    Cheers,
    John T.

    54 11BL; 61DS19 LHM (son's); 71DS21 BVH; 73SM 3.0; 73SM 2.7EFI; 73SM 3.0 (other son's); 74 Maserati Merak

  6. #6
    Fellow Frogger!
    Join Date
    Nov 2010
    Location
    Symar/ca/usa
    Posts
    607

    Default

    Quote Originally Posted by Bad Bertie View Post
    My newly acquired D special refuses to rise in the front. I suspect some air got in the system when at once stage she was low on LHM. Today I undid the hose at the tank end and put more LHM into the hose to feed into the pump. A trick Bruce Elsegood told me about years ago, and it worked! but not today on this one. Any other suggestions appreciated.
    As Roger noted, if the rear pressurizes and the steering works, you may wind up having to clean out the front HC. However, before going to that, remove front wing/tire and mud shield and ensure that the manual HC control (and being a RHD car - the all of those linkages going to the HC valve) are working as intended. LHD are a lot more simple as that control rod is basically a straight 'shot' to the front HC. Keep in mind that the control rod attached to the front 'anti-roll bar' is what sets the height of the car. Don't fool with it, at all, until the other problem(s) are resolved. And it's setting is a bit tricky - IOW it does not take much movement of it to greatly affect the cars 'normal' height and subsequently ride quality.

    Keep in mind that the HC's internal control valve only has to move, literally, a fraction of an inch to either allow pressure into or out of the suspension system. And any air in the system will not prevent the car from going up/down. It just gets shoved, under pressure, up to and inside the suspension spheres.

  7. #7
    1000+ Posts gerry freed's Avatar
    Join Date
    Jun 2003
    Location
    Lauderdale, Tasmania
    Posts
    2,887

    Default

    Viagra?
    Bounge and 59 Floride like this.
    Think Global - Ride on Spheres

  8. #8
    Fellow Frogger! Le Parisian's Avatar
    Join Date
    Nov 2010
    Location
    Guildford West
    Posts
    359

    Default

    Quote Originally Posted by Bad Bertie View Post
    My newly acquired D special refuses to rise in the front. I suspect some air got in the system when at once stage she was low on LHM. Today I undid the hose at the tank end and put more LHM into the hose to feed into the pump. A trick Bruce Elsegood told me about years ago, and it worked! but not today on this one. Any other suggestions appreciated.
    Whats the HLM level in the holding tank?? Is there any HLM visible in the holding tank???

  9. #9
    VIP Sponsor 59 Floride's Avatar
    Join Date
    Oct 2010
    Location
    It's how I roll...Brisbane
    Posts
    33,176

    Default

    Quote Originally Posted by gerry freed View Post
    Viagra?
    Someone had to say it..

  10. #10
    Fellow Frogger
    Join Date
    Jan 2004
    Location
    Sydney
    Posts
    9,777

    Default

    Quote Originally Posted by gerry freed View Post
    Viagra?
    No, I think he mistakenly named the car Souffle and is now expecting too much.

    Debris inside the HC is very likely. Try a jack (low profile!) under the left jacking point or under a stiff board under the jacking point to lift it a fraction. If the bump stops are non-existent there is a slight chance the pistons have moved too far and are covering the port in the cylinder body. Or the rollbar can move side to side too much if the bushes are worn and the HC valve is binding up because of too much lateral pressure from the linkage.
    Bad Bertie likes this.

  11. #11
    Real cars have hydraulics DoubleChevron's Avatar
    Join Date
    May 2000
    Location
    Ballarat,Vic,Aust.
    Posts
    16,426

    Default

    It's almost always an empty reseviour in my experiance. Have a look under the car, I bet all the LHM you added has leaked back out (somewhere). The more obvious telltale is the pump usually gets noisy and rattly as it runs out of fluid.

    It's unlikely I've found for the height corrector to get stuck on low unless you have been messing with the linkages or height control lever ( I've found they usually lift to normal ride height, but will not adjust height when the height corrector is seized, as the linkages are not capable of moving the height corrector when it's sludged up internally).

    seeya,
    Shane L.
    'Cit' homepage:
    Citroen Workshop
    Proper cars--
    '85 Series II CX2500 GTi Turbo I
    '63 ID19 http://www.aussiefrogs.com/forum/citro%EBn-forum/90325-best-project-car-you-have-ever-seen.html
    '72 DS21 ie 5spd pallas (last looked at ... about 15years ago)
    '78 GS1220 pallas
    '92 Range Rover Classic ... 5spd manual.

    Yay ... No Slugomatics


    Modern Junk:
    '07 Poogoe 407 HDi 6spd manual

  12. #12
    Fellow Frogger
    Join Date
    Jan 2004
    Location
    Sydney
    Posts
    9,777

    Default

    Or the pump has an internal leak due to a split body. I do recall a Special that wouldn't rise at the front unless you held the revs up for 30 seconds. The pump body had split.

  13. #13
    Administrator GreenBlood's Avatar
    Join Date
    Mar 2001
    Location
    Brisbane
    Posts
    8,185

    Default

    Quote Originally Posted by David S View Post
    Or the pump has an internal leak due to a split body. I do recall a Special that wouldn't rise at the front unless you held the revs up for 30 seconds. The pump body had split.
    The other likely possibility is a crack/split in the rubber hose from reservoir to pump - only takes the slightest split (you may not see it) to suck air.

    Cheers
    Chris
    forumnoreason likes this.
    74 D(very Special) >>Rejuvenation Thread<<
    08 C5 X7 HDi very Noir



    "Déesse" Roland Barthes, 'Mythologies', 1957

    The Déesse has all the characteristics of one of those objects fallen from another universe that fed the mania for novelty in the eighteenth century and a similar mania expressed by modern science fiction: the Déesse is first and foremost the new Nautilus.

    (Umberto Eco [Ed], The History of Beauty, Rizzoli, NY, 2004)

  14. #14
    1000+ Posts Bad Bertie's Avatar
    Join Date
    Nov 2010
    Location
    Sydney
    Posts
    3,581

    Default

    Thank you all for the advice and input, and I am trying to digest it all! Went back to it today.Not sure what i did first, but now the rear will not rise either! I did run the engine, and played with the lever a lot. Then I took the 12 mm spanner to the bleed nut, opened it with the engine going, there was this hissing sound. When it stopped, I closed her up.the car still sitting on the floor. Now, how do I know I have enough LHM in the system? She is not making that cloggedeglog sound anymore. I stuck a long screw driver into the LHM tank, and there is an inch of fluid there. Now what? Sad Bertie.

  15. #15
    1000+ Posts Bad Bertie's Avatar
    Join Date
    Nov 2010
    Location
    Sydney
    Posts
    3,581

    Default

    Quote Originally Posted by Bad Bertie View Post
    Thank you all for the advice and input, and I am trying to digest it all! Went back to it today.Not sure what i did first, but now the rear will not rise either! I did run the engine, and played with the lever a lot. Then I took the 12 mm spanner to the bleed nut, opened it with the engine going, there was this hissing sound. When it stopped, I closed her up.the car still sitting on the floor. Now, how do I know I have enough LHM in the system? She is not making that cloggedeglog sound anymore. I stuck a long screw driver into the LHM tank, and there is an inch of fluid there. Now what? Sad Bertie.
    By the way, there appears to be no leaks!

  16. #16
    Fellow Frogger!
    Join Date
    Jul 2004
    Location
    Castlemaine Area
    Posts
    466

    Default

    Quote Originally Posted by Bad Bertie View Post
    Thank you all for the advice and input, and I am trying to digest it all! Went back to it today.Not sure what i did first, but now the rear will not rise either! I did run the engine, and played with the lever a lot. Then I took the 12 mm spanner to the bleed nut, opened it with the engine going, there was this hissing sound. When it stopped, I closed her up.the car still sitting on the floor. Now, how do I know I have enough LHM in the system? She is not making that cloggedeglog sound anymore. I stuck a long screw driver into the LHM tank, and there is an inch of fluid there. Now what? Sad Bertie.
    I think I'd want more like 3 to 4 inches - - at least.

    John
    UFO likes this.

  17. #17
    Administrator GreenBlood's Avatar
    Join Date
    Mar 2001
    Location
    Brisbane
    Posts
    8,185

    Default

    Quote Originally Posted by Bad Bertie View Post
    Thank you all for the advice and input, and I am trying to digest it all! Went back to it today.Not sure what i did first, but now the rear will not rise either! I did run the engine, and played with the lever a lot. Then I took the 12 mm spanner to the bleed nut, opened it with the engine going, there was this hissing sound. When it stopped, I closed her up.the car still sitting on the floor. Now, how do I know I have enough LHM in the system? She is not making that cloggedeglog sound anymore. I stuck a long screw driver into the LHM tank, and there is an inch of fluid there. Now what? Sad Bertie.
    Bertie, Bertie, Bertie. . .
    You need to top up the LHM !!
    You check the level (without a screwdriver) by using the front clear sight tube. As your car is sitting on bump stops (Lowest) the level should be close to top rib on the tank, around 80mm from the top. Once topped up you check the level with the car on the highest setting, LHM should sit between the Mini/Max mark at the sight tube.

    Once you have corrected the LHM level, let's see it the car rises. . . if so, check each corner with the car at normal ride height, it should be soft and compliant. If any corner is stiff you would suspect a ruptured sphere membrane, this would account for some fluid loss and the hissing you heard.

    Cheers
    Chris
    74 D(very Special) >>Rejuvenation Thread<<
    08 C5 X7 HDi very Noir



    "Déesse" Roland Barthes, 'Mythologies', 1957

    The Déesse has all the characteristics of one of those objects fallen from another universe that fed the mania for novelty in the eighteenth century and a similar mania expressed by modern science fiction: the Déesse is first and foremost the new Nautilus.

    (Umberto Eco [Ed], The History of Beauty, Rizzoli, NY, 2004)

  18. #18
    Fellow Frogger!
    Join Date
    Aug 2011
    Location
    Melbourne
    Posts
    407

    Default

    By my count, six possible causes and solutions so far! From personal experience, I can add a seventh - blocked outlet tube from the height corrector. Being a Citroen, any or all of them are perfectly viable...
    Bad Bertie likes this.

  19. #19
    UFO
    UFO is offline
    Citroën Tragic UFO's Avatar
    Join Date
    Aug 2001
    Location
    Gerringong, NSW, Australia
    Posts
    9,721

    Default

    Low fluid, pump sucking air. Open your wallet Bert. By the sounds of it you need at least two litres of LHM.
    Craig K
    2009 C5 HDi Exclusive

  20. #20
    UFO
    UFO is offline
    Citroën Tragic UFO's Avatar
    Join Date
    Aug 2001
    Location
    Gerringong, NSW, Australia
    Posts
    9,721

    Default

    Quote Originally Posted by Citroenfan View Post
    As Roger noted, if the rear pressurizes and the steering works, you may wind up having to clean out the front HC. However, before going to that, remove front wing/tire and mud shield and ensure that the manual HC control (and being a RHD car - the all of those linkages going to the HC valve) are working as intended. LHD are a lot more simple as that control rod is basically a straight 'shot' to the front HC. Keep in mind that the control rod attached to the front 'anti-roll bar' is what sets the height of the car. Don't fool with it, at all, until the other problem(s) are resolved. And it's setting is a bit tricky - IOW it does not take much movement of it to greatly affect the cars 'normal' height and subsequently ride quality.

    Keep in mind that the HC's internal control valve only has to move, literally, a fraction of an inch to either allow pressure into or out of the suspension system. And any air in the system will not prevent the car from going up/down. It just gets shoved, under pressure, up to and inside the suspension spheres.
    It is essentially the same in a RHD D as the RHD adaption for the height lever is that the lever is on the right but a rod transverses the front of the seat mount "box" and attaches to the normal mechanism on the left.
    Craig K
    2009 C5 HDi Exclusive

  21. #21
    Fellow Frogger! JAJEA's Avatar
    Join Date
    Apr 2013
    Location
    Essendon
    Posts
    660

    Default

    Come on guys, how about telling him he got a lemon and he should get rid of it!

    JAJEA

    Quote Originally Posted by Bad Bertie View Post
    By the way, there appears to be no leaks!

  22. #22
    1000+ Posts Bad Bertie's Avatar
    Join Date
    Nov 2010
    Location
    Sydney
    Posts
    3,581

    Default

    Quote Originally Posted by GreenBlood View Post
    Bertie, Bertie, Bertie. . .
    You need to top up the LHM !!
    You check the level (without a screwdriver) by using the front clear sight tube. As your car is sitting on bump stops (Lowest) the level should be close to top rib on the tank, around 80mm from the top. Once topped up you check the level with the car on the highest setting, LHM should sit between the Mini/Max mark at the sight tube.

    Once you have corrected the LHM level, let's see it the car rises. . . if so, check each corner with the car at normal ride height, it should be soft and compliant. If any corner is stiff you would suspect a ruptured sphere membrane, this would account for some fluid loss and the hissing you heard.

    Cheers
    Chris
    Dear mister Greenblood, the reason I used a screwdriver, no harm in that, i might ad, is .that it wasn't showing anything on the tube. The manual will tell you to check the level when the car is in high, which I couldnt do. I could be forgiven for thinking all the fluid was elsewhere in the car.

  23. #23
    1000+ Posts Bad Bertie's Avatar
    Join Date
    Nov 2010
    Location
    Sydney
    Posts
    3,581

    Default

    Quote Originally Posted by JAJEA View Post
    Come on guys, how about telling him he got a lemon and he should get rid of it!

    JAJEA
    This is no lemon.

  24. #24
    1000+ Posts Bad Bertie's Avatar
    Join Date
    Nov 2010
    Location
    Sydney
    Posts
    3,581

    Default

    Quote Originally Posted by UFO View Post
    Low fluid, pump sucking air. Open your wallet Bert. By the sounds of it you need at least two litres of LHM.
    I know the sound of a pump sucking air, and it is not doing it.

  25. #25
    1000+ Posts Bad Bertie's Avatar
    Join Date
    Nov 2010
    Location
    Sydney
    Posts
    3,581

    Default

    Quote Originally Posted by gilberthenry View Post
    I think I'd want more like 3 to 4 inches - - at least.

    John
    Yes, I am sure there are few guys out there who wish for that!

Page 1 of 2 12 Last

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •