DSpecial: sulphur smell
  • Register
  • Help
Results 1 to 17 of 17
Like Tree10Likes
  • 1 Post By ajaxvte
  • 3 Post By pottsy
  • 1 Post By dee see
  • 2 Post By Ken W
  • 2 Post By pottsy
  • 1 Post By pottsy

Thread: DSpecial: sulphur smell

  1. #1
    Fellow Frogger!
    Join Date
    Aug 2011
    Location
    Melbourne
    Posts
    407

    Default DSpecial: sulphur smell

    Excuse my ignorance, but can anybody advise on a noticeable sulphur smell that has developed in my DSpecial.

    At first I thought it might be drawing in exhaust from other cars. Then I thought it might be a bad batch of petrol. But no.

    A quick internet search tells me it is either the catalytic converter or possible fuel pressure regulator (and suggestion to replace fuel filter). Or possibly the battery (although I see no obvious buildup or problem there).

    Is there anything specific to D model Citroen that I should be aware of before investigating further?

    AM

    Advertisement
    gsowner84 likes this.

  2. #2
    1000+ Posts pottsy's Avatar
    Join Date
    Sep 2002
    Location
    Melbourne, Northern Suburbs
    Posts
    1,024

    Default

    Only time I've copped such a smell in a older car was in a Mini when the voltage regulator had discombobulated causing the battery to overcharge dramatically. The battery being overcharged is about the only cause I can imagine in a DS that would cause such a pong.

    What happens is that the sulphuric acid within the battery gets so hot (may even boil) and emits gas, with an obvious sulphurous aroma.

    May I suggest you check battery voltages and charging etc, as a cooked battery is not a lovesome thing!

    Cheers, and keep us posted, Pottsy.
    GreenBlood, gsowner84 and Dano like this.
    Buvito Ergo Sum!

    The Fleet:

    2018 C3 Shine ("Oscar" Mrs P's)
    1974 D Special Manual Sedan ("Moby Dick")
    2006 C5 HDI Wagon Auto ("Mephistopheles")
    1982 2CV6 ("Gaston") Seasoned traveller
    1975 GS Pallas ("GiSelle") Next project
    And for Fun, 1968 Mini Deluxe ("The R & D'luxe" 1078cc, Grin Factor 100!)

  3. #3
    Member
    Join Date
    Oct 2018
    Location
    au
    Posts
    49

    Default

    What he said/\/\ battery boiling
    gsowner84 likes this.

  4. #4
    Fellow Frogger!
    Join Date
    Nov 2010
    Location
    Melbourne, Australia
    Posts
    278

    Default

    Hi Ajaxvte

    I had this issue a few months ago. The alternator is overcharging the battery, causing the battery to leak.

    My mechanic advised me to get a new alternator and voltage regulator.

    Regards Syd
    1974 Citroen D Special (Blanc Meije)
    1989 Citroen 2CV 6 Dolly (Plum & Custard)

    Previously owned Frenchies -
    1976 Citroen GS 1220
    1997 Peugeot 306 XSi
    1995 Citroen XM Series II V6 (Vert Vega)

  5. #5
    Thank God for my Hydroen harrisson_citroen's Avatar
    Join Date
    Feb 2002
    Location
    Coolum Beach
    Posts
    1,918

    Default

    Quote Originally Posted by ajaxvte View Post
    Excuse my ignorance, but can anybody advise on a noticeable sulphur smell that has developed in my DSpecial.

    At first I thought it might be drawing in exhaust from other cars. Then I thought it might be a bad batch of petrol. But no.

    A quick internet search tells me it is either the catalytic converter or possible fuel pressure regulator (and suggestion to replace fuel filter). Or possibly the battery (although I see no obvious buildup or problem there).

    Is there anything specific to D model Citroen that I should be aware of before investigating further?

    AM
    No catalyctic converter or fuel pressure regulator on a DSpecial,
    Leaves you -as the replies above show - with battery problem!
    DS Un jour, DS toujours !

    DS23 IE Pallas Automatique
    C5 X7 163 Exclusive
    C3 II 2010

  6. #6
    Fellow Frogger!
    Join Date
    Sep 2001
    Location
    melbourne
    Posts
    600

    Default

    I had this problem a few years ago when the battery was being charged at around 15v
    It also blew a few light bulbs
    Get a voltmeter and check voltage with engine running around 2000 rpm
    Should read about 13.5 max


    Sent from my iPhone using aussiefrogs

  7. #7
    Fellow Frogger!
    Join Date
    Aug 2011
    Location
    Melbourne
    Posts
    407

    Default

    Quote Originally Posted by harrisson_citroen View Post
    No catalyctic converter or fuel pressure regulator on a DSpecial,
    Leaves you -as the replies above show - with battery problem!
    I had figured as much! Upon closer inspection, there is evidence of build-up - not much though - from leaking fluid on the clamps holding the battery in place. I won’t get to the car this month so will test the charges etc when I get back.

  8. #8
    1000+ Posts pottsy's Avatar
    Join Date
    Sep 2002
    Location
    Melbourne, Northern Suburbs
    Posts
    1,024

    Default

    Can I suggest that until you can get to it that you leave the battery disconnected, just in case there are deep seated issues with your regulator.

    Better safe than incinerated!

    Cheers, Pottsy.
    Buvito Ergo Sum!

    The Fleet:

    2018 C3 Shine ("Oscar" Mrs P's)
    1974 D Special Manual Sedan ("Moby Dick")
    2006 C5 HDI Wagon Auto ("Mephistopheles")
    1982 2CV6 ("Gaston") Seasoned traveller
    1975 GS Pallas ("GiSelle") Next project
    And for Fun, 1968 Mini Deluxe ("The R & D'luxe" 1078cc, Grin Factor 100!)

  9. #9
    1000+ Posts Ken W's Avatar
    Join Date
    Sep 2002
    Location
    North Brisbane
    Posts
    1,928

    Default

    You should also neutralise the acid with some bicarb soda.
    GreenBlood and Dano like this.

  10. #10
    Administrator GreenBlood's Avatar
    Join Date
    Mar 2001
    Location
    Brisbane
    Posts
    8,185

    Icon3

    Quote Originally Posted by Ken W View Post
    You should also neutralise the acid with some bicarb soda.
    A very important tip. . . otherwise you'll be rewiring and replacing corroded contacts/connectors - don't ask me how I know

    I ended up scrapping the OE regulator and alternator and upgrading to a composite alternator!

    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)

  11. #11
    Fellow Frogger!
    Join Date
    Jun 2015
    Location
    Ashburton
    Posts
    198

    Default

    Quote Originally Posted by GreenBlood View Post
    A very important tip. . . otherwise you'll be rewiring and replacing corroded contacts/connectors - don't ask me how I know

    I ended up scrapping the OE regulator and alternator and upgrading to a composite alternator!

    Cheers
    Chris
    I did the same with a composite unit - looks the same just no ancient regulator to worry about

  12. #12
    1000+ Posts pottsy's Avatar
    Join Date
    Sep 2002
    Location
    Melbourne, Northern Suburbs
    Posts
    1,024

    Default

    One of the first upgrades I installed back in 2005. Still going strong.

    Bosch (aust) 85 amp with easily replaceable and removable integrated regulator.

    Fitted it to the Ducellier mount and Robert's yer father's brother.

    Cheers, Pottsy.
    Attached Thumbnails Attached Thumbnails DSpecial: sulphur smell-2-bosch-ducellier-mount.jpg   DSpecial: sulphur smell-1-ducellier-ducellier-mount.jpg  
    Attached Images Attached Images
    GreenBlood and gsowner84 like this.
    Buvito Ergo Sum!

    The Fleet:

    2018 C3 Shine ("Oscar" Mrs P's)
    1974 D Special Manual Sedan ("Moby Dick")
    2006 C5 HDI Wagon Auto ("Mephistopheles")
    1982 2CV6 ("Gaston") Seasoned traveller
    1975 GS Pallas ("GiSelle") Next project
    And for Fun, 1968 Mini Deluxe ("The R & D'luxe" 1078cc, Grin Factor 100!)

  13. #13
    Fellow Frogger!
    Join Date
    Aug 2011
    Location
    Melbourne
    Posts
    407

    Default

    Many thanks all. Yes battery is disconnected and acid/powder build-up has been neutralised.

  14. #14
    Fellow Frogger!
    Join Date
    Aug 2011
    Location
    Melbourne
    Posts
    407

    Default

    Finally got to the car after a couple of months today. Mulitimeter reads high 12s at idle and up to 14.5v at revs. Is this enough to cook the battery (predictably, driving the car today produced no sulphur smells...).

  15. #15
    Fellow Frogger!
    Join Date
    Aug 2011
    Location
    Melbourne
    Posts
    407

    Default

    Went back to the drawing board this morning and tested the voltage at higher revs - 3-3,500 revs. The output was much higher, at 16-18v. So problem confirmed, I guess. The existing regulator was a repro one I bought off Roger Parker a few years ago. This time looks like I should now just go down the replacement alternator with built in regulator route. The Citroen websites (Citroen classics, l’Atelier524, der franzose etc) are very expensive, with exorbitant freight. Can I please seek advice on where and how to source one locally...

  16. #16
    1000+ Posts pottsy's Avatar
    Join Date
    Sep 2002
    Location
    Melbourne, Northern Suburbs
    Posts
    1,024

    Default

    At the end of the day, an alternator is a fairly standard item anywhere. You could try most of the larger Auto Parts places, perhaps Burson's. Maybe an auto electrician.

    I sourced my Bosch unit from a local parts supplier (now retired) who had a suitable unit on the shelf. If you take the old one with you they should be able to come up with something that will fit.

    I'll admit I had to do a bit of juggling to get it on the Ducellier mount but time has shown it to be worth the effort.

    Of course, if you're seeking something indistinguishable from a factory fitting (never been a priority for me) you could maybe get the existing one and regulator overhauled by an Auto Electrician.

    Cheers, and bonne chance, Pottsy.
    gsowner84 likes this.
    Buvito Ergo Sum!

    The Fleet:

    2018 C3 Shine ("Oscar" Mrs P's)
    1974 D Special Manual Sedan ("Moby Dick")
    2006 C5 HDI Wagon Auto ("Mephistopheles")
    1982 2CV6 ("Gaston") Seasoned traveller
    1975 GS Pallas ("GiSelle") Next project
    And for Fun, 1968 Mini Deluxe ("The R & D'luxe" 1078cc, Grin Factor 100!)

  17. #17
    Fellow Frogger!
    Join Date
    Dec 2010
    Location
    Wagga Wagga
    Posts
    347

    Default

    A Holden Commobore alternator replaced our D Special's original Paris -Rhone. We also replaced the original mechanical voltage regulator with an electronic one. Not expensive.

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
  •