CX problems (already...)
  • Register
  • Help
Results 1 to 25 of 25
Like Tree5Likes
  • 1 Post By JohnW
  • 1 Post By gerrypro
  • 3 Post By Ken W

Thread: CX problems (already...)

  1. #1
    WRB
    WRB is offline
    Fellow Frogger!
    Join Date
    Sep 2012
    Location
    Burwood Vic
    Posts
    558

    Icon6 CX problems (already...)

    I got myself a 28 day unregistered car permit yesterday and drove over to Peter dekkers place which is just 5 minutes away from me. Car ran sweetly but, on the way back it started hesitating and cutting out. Every time I had to re-start, heaps of black smoke came pouring out of the exhaust pipe. I got it home, opened the bonnet and it was really hot. The bonnet stay was burning hot to touch! Turns out the main cooling fan is not working. Just tried starting it and, it would catch, blow blue smoke from the exhaust and die. The engine turns over okay so, I am hoping I have a stuck needle valve in the carby. The blue smoke is a bit of a worry though. I will pull off the tappet cover an try and get my compression tester into the spark plug holes to make sure nothing is stuffed in the engine. There is an electrovalve on the carby and I have no idea what it's for so, an insight would be good.
    Work will have to wait as I have some jobs on at the moment that I have to finish.

    Any ideas.

    Advertisement


    I am starting to think I just have to look at a car and it will break down......

  2. #2
    Contented Peugeot Driver addo's Avatar
    Join Date
    Jun 2005
    Location
    Don't remind me!
    Posts
    16,609

    Default

    You poor bugger. The better the intentions, the greater your risk of something going wrong.

    I am starting to think I just have to look at a car and it will break down......
    I could put you to work on my professional rivals.

    Oil and water levels OK? Did the temperature climb much on the gauge?

    Is this the Renault type carby (32DARA)?

  3. #3
    Too many posts! JohnW's Avatar
    Join Date
    Jul 2001
    Location
    Perth, WA, Australia
    Posts
    10,705

    Default

    Sigh. Second attempt as the first disappeared.

    It sounds like accumulated neglect in several areas.

    I once had a worrying smoke problem that, to keep repeat typing short, was a small leak from the base plate of the Diravi unit somehow getting to the flexible joint on the exhaust. Never a drip on the floor, but serious blue smoke on start up, the amount in proportion to the time the car had been resting. I worked it out by elimination but my friendly Citroen man (skp) actually found and fixed the leak and the smoke has not returned.

    I thought the solenoid was a cut out, allowing fuel through only when the ignition was on. May be wrong though.

    Good luck.
    Jinandfonic likes this.
    JohnW

    Renault 4CV 1951
    Renault R8 1965
    Renault Scenic 2005 (wife's)
    Renault Scenic 2007 (mine)
    Renault Scenic 2006 (daughter's)
    CitroŽn CX Pallas 1980

    National Co-ordinator, Renault 4CV Register of Australia

  4. #4
    Fellow Frogger!
    Join Date
    Dec 2010
    Location
    Wagga Wagga
    Posts
    342

    Default

    We had the electrovalve replaced on the carby CX2400 when motor would run on after the ignition was switched off. It could have something to do with cutting off fuel to carby.

  5. #5
    1000+ Posts gerrypro's Avatar
    Join Date
    Nov 2010
    Location
    Camperdown 3260 Australia
    Posts
    3,020

    Default

    The electro valve cuts off fuel supply once the ignition is turned off and prevents running on. Most have had the armature removed from them as they are a constant source of inexplicable stopping of the engine at idle, particularly with the C-Matic once the voltage gets low at idle speed.
    Jinandfonic likes this.
    Cheers Gerry

  6. #6
    WRB
    WRB is offline
    Fellow Frogger!
    Join Date
    Sep 2012
    Location
    Burwood Vic
    Posts
    558

    Default

    I am hoping that the problem is oversupply of petrol as that should be an easy fix - I will take the carby apart after I checked compression

  7. #7
    Real cars have hydraulics DoubleChevron's Avatar
    Join Date
    May 2000
    Location
    Ballarat,Vic,Aust.
    Posts
    16,322

    Default

    I"ve never seen a CX blow blue smoke. Sounds like you have broken the oil rings. black smoke with be a stuck needle/seat. Do you think it was cooked ?

    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

  8. #8
    WRB
    WRB is offline
    Fellow Frogger!
    Join Date
    Sep 2012
    Location
    Burwood Vic
    Posts
    558

    Default

    I asked my son what colour the smoke was and he told me black so, no problem there. I am going to check the fuel tank breather to see if it is blocked as that would force petrol through the carb under pressure on a hot day. I will also check the water pump and thermostat to ensure they are okay - the radiator core has been replaced recently and I will reconnect the bloody fan..... I think that the carb is most likely to be the problem so, I will clean it, put in a new needle and seat and reset the float level.

  9. #9
    Real cars have hydraulics DoubleChevron's Avatar
    Join Date
    May 2000
    Location
    Ballarat,Vic,Aust.
    Posts
    16,322

    Default

    Quote Originally Posted by WRB View Post
    I asked my son what colour the smoke was and he told me black so, no problem there. I am going to check the fuel tank breather to see if it is blocked as that would force petrol through the carb under pressure on a hot day. I will also check the water pump and thermostat to ensure they are okay - the radiator core has been replaced recently and I will reconnect the bloody fan..... I think that the carb is most likely to be the problem so, I will clean it, put in a new needle and seat and reset the float level.
    needle and seat. you can't force fuel through as the needle and seat should stop it.
    'Cit' homepage:
    Citroen Workshop
    Proper cars--
    '85 Series II CX2500 GTi Turbo I
    '63 ID19 http://www.aussiefrogs.com/forum/showthread.php?t=90325
    '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

  10. #10
    WRB
    WRB is offline
    Fellow Frogger!
    Join Date
    Sep 2012
    Location
    Burwood Vic
    Posts
    558

    Default

    Got a carb rebuild set on the way....

  11. #11
    Real cars have hydraulics DoubleChevron's Avatar
    Join Date
    May 2000
    Location
    Ballarat,Vic,Aust.
    Posts
    16,322

    Default

    THe choke is pushed in ?? ......................................
    'Cit' homepage:
    Citroen Workshop
    Proper cars--
    '85 Series II CX2500 GTi Turbo I
    '63 ID19 http://www.aussiefrogs.com/forum/showthread.php?t=90325
    '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
    WRB
    WRB is offline
    Fellow Frogger!
    Join Date
    Sep 2012
    Location
    Burwood Vic
    Posts
    558

    Default

    Yep, and I checked it at the carb end. The problem started after I did a faster than safe U-turn (you want to try that with manual steering!!) - might have unseated the float....

  13. #13
    Real cars have hydraulics DoubleChevron's Avatar
    Join Date
    May 2000
    Location
    Ballarat,Vic,Aust.
    Posts
    16,322

    Default

    it probably just needs the fuel filters replaced. The factory filter is at the back, underneath, infront of the fuel tank. It'll be breaking up internally and sending crap forward as it will never have been replaced (as no-one knows the are there).

    seeya,
    Shane L.
    'Cit' homepage:
    Citroen Workshop
    Proper cars--
    '85 Series II CX2500 GTi Turbo I
    '63 ID19 http://www.aussiefrogs.com/forum/showthread.php?t=90325
    '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

  14. #14
    WRB
    WRB is offline
    Fellow Frogger!
    Join Date
    Sep 2012
    Location
    Burwood Vic
    Posts
    558

    Default

    I will check it out. The car is 40 years old so the carb bowl is probably filled with crap

  15. #15
    Fellow Frogger!
    Join Date
    Nov 2010
    Location
    Coffs Harbour, NSW, Australia
    Posts
    615

    Default

    Have you checked that the air cleaner didn't get saturated with oil through the breather when you did that U- turn ?
    Just a thought !

    Richard

  16. #16
    Member
    Join Date
    Oct 2015
    Location
    Newcastle NSW Australia
    Posts
    51

    Default

    fellow CX driver here except mine is a Diesel, and blows black smoke on purpose......good luck in your endeavors

  17. #17
    Contented Peugeot Driver addo's Avatar
    Join Date
    Jun 2005
    Location
    Don't remind me!
    Posts
    16,609

    Default

    Any progress?

  18. #18
    Fellow Frogger! John P's Avatar
    Join Date
    Jan 2004
    Location
    Somerville, Victoria
    Posts
    153

    Default

    Hi, Warren.
    To go back to the start of all the drama which was the fan(s) not working. You should have two. I'm still not sure how experienced a CX person you are, but all of us who have owned them have had to come to grips with the fan relays. They and some mates live under the left hand headlight. There are 3 fan relays and I have forgotten their precise relationship, but faulty ones account for most misbehaving fans. Fortunately an easy fix once you have a known good one. Next stop would be the temperature sensors which trigger the fans. The low speed one is in the bottom tank and the high speed one mounted behind the radiator at the top. These are generally reliable but a faulty connection or broken wire would stop them dead. Good luck.
    2006 C5 2.0 HDI estate - daily driver
    1981 2CV - The Amelie project is complete.
    1930 C6F torpedo - My Great Folly! Project under way.

  19. #19
    Fellow Frogger
    Join Date
    Jan 2004
    Location
    Sydney
    Posts
    9,670

    Default

    Some early cars, maybe up to 1977 ?? had one fan only apparently. I can only recall seeing one like that, but the twin fans are apparently a later and no doubt better system. Certainly, in AC cars, it's interlinked. This car is early, manual steering and I think no A/C. Maybe, the fan failed to work because the air temp sensor has failed. It's a small capsule on a small bracket behind the radiator.

  20. #20
    1000+ Posts Greg C's Avatar
    Join Date
    Oct 2003
    Location
    Sydney
    Posts
    1,304

    Default

    It is only Grande Exportation cars that had the 2 fans with the 3 relays so Warrens car will be different


    Sent from my iPhone using Tapatalk
    Mine

    CX Prestige
    Toyota Prius

    In the family

    Xantia SX

  21. #21
    1000+ Posts Ken W's Avatar
    Join Date
    Sep 2002
    Location
    North Brisbane
    Posts
    1,892

    Default

    If it has a carbon cannister for the fuel vapour containment, the foam holding them in will have by now degraded and there will be lots of little carbon granules making their way into various nooks and cannies of the carby and causing all sorts of mischief to jets and fuel and air passages. Be on the lookout for this issue.

    Cheers, Ken
    addo, Jinandfonic and JohnW like this.

  22. #22
    Member mork63ukCGAT's Avatar
    Join Date
    Jan 2006
    Location
    Hull UK
    Posts
    75

    Default

    Quote Originally Posted by DoubleChevron View Post
    I"ve never seen a CX blow blue smoke.
    Wish I could say the same long time ago though

  23. #23
    WRB
    WRB is offline
    Fellow Frogger!
    Join Date
    Sep 2012
    Location
    Burwood Vic
    Posts
    558

    Default

    Hi,
    It has two fans (and air conditioning) and I have been studying the wiring diagrams. I will clean the carby today so I can start it, raise it up and drain the cooling system. I will start by checking the fuses thermal switches - it has 2 on the radiator but, only one is on any of the wiring diagrams. I will also check the fan motor and all of the connectors (all the connectors under the bonnet need cleaning). I will check the relays last.... Process of elimination. While the coolant is out, I will also check the thermostat. The car had the radiator re-cored a few years ago.

    Jeez the wiring is a bitch in these cars....

    cheers

  24. #24
    WRB
    WRB is offline
    Fellow Frogger!
    Join Date
    Sep 2012
    Location
    Burwood Vic
    Posts
    558

    Default

    PS - no carbon canister but, shane mentioned an inline filter in front of the fuel tank so, I will change it as well. The filter just before the carb has been changed recently

  25. #25
    Fellow Frogger! denxm's Avatar
    Join Date
    Nov 2010
    Location
    uki aust
    Posts
    448

    Default

    WRB,this will be of no notice to you but KEN W is on the money about the carbon canister breakdown blocking the carby.
    took me a while to figure out why i was getting blocked jets on one of my old cx's,it was the cause of it.

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
  •