More questions on 1.9TD fuel air leaks.

This is the Forum for all your Citroen Technical Questions, Problems or Advice.

Moderator: RichardW

aerodynamica
Donor 2023
Posts: 1299
Joined: 26 Dec 2007, 18:10
Location: Glasgow
Lexia Available: Yes
My Cars: 2008 C5 Exclusive Tourer
1993 Xantia 1.9 TD VSX Mk1 Sinker A.K.A Slugmobile 13'
'Old Katy'
previous convictions: totaling 52litres of LHM in one go:
1968 ID19B 'Old Polly' Stellar white
1993 Xantia 1.9 TD SX Mk1 Sinker Silver
1992 XM 2.0 SEi Turbo Manual Anthracite Grey
1982 CX 20 Pallas 'Old Goldy'
1993 XM 2.1 SD Auto Light blue
1993 Xantia 1.9 TD SX Mk1 Sinker light Blue
1982 BX 16 TRS 'Cyril' Vallelunga Red
1995 Xantia 1.9 D SX Auto Dark green
1977 CX 2400 Pallas C-Matic 'Aphrodite' Regatta Blue
1982 GSA Pallas SE Silver Pearl
1980 CX 2000 Reflex Vallelunga Red
1978 CX 2400 Pallas C-Matic 'Prometheus' Midnight blue
1984 BX 14E 'Cecil the slugmobile' Maroon
1987 Fiat Panda 'the mighty panda'
x 97

Re: More questions on 1.9TD fuel air leaks.

Post by aerodynamica »

Right I've got a new pruning bulb on the way but Citroën want 60 odd plus the old vodka and tonic for a new filter housing. And it only comes on its own; no top or any stoppers. I'm going to bypass it but wonder how acceptable it is to run it bypassed (after I source the 10 - 8mm connection) and for how long?
Graeme M
2008 C5 Exclusive Tourer 2.0 HDi
robert_e_smart
Posts: 1031
Joined: 23 Oct 2009, 10:51
Location: Northern Ireland
My Cars:
x 14

Re: More questions on 1.9TD fuel air leaks.

Post by robert_e_smart »

Would a small petrol style in-line filter let you away for a few days?
1990 XM 2.1 Turbo SD
1991 BX 16 TGS Auto
1992 ZX 1.6 Aura Auto
1994 Xantia 2.0 16V VSX
2008 C5 2.7 Exclusive
aerodynamica
Donor 2023
Posts: 1299
Joined: 26 Dec 2007, 18:10
Location: Glasgow
Lexia Available: Yes
My Cars: 2008 C5 Exclusive Tourer
1993 Xantia 1.9 TD VSX Mk1 Sinker A.K.A Slugmobile 13'
'Old Katy'
previous convictions: totaling 52litres of LHM in one go:
1968 ID19B 'Old Polly' Stellar white
1993 Xantia 1.9 TD SX Mk1 Sinker Silver
1992 XM 2.0 SEi Turbo Manual Anthracite Grey
1982 CX 20 Pallas 'Old Goldy'
1993 XM 2.1 SD Auto Light blue
1993 Xantia 1.9 TD SX Mk1 Sinker light Blue
1982 BX 16 TRS 'Cyril' Vallelunga Red
1995 Xantia 1.9 D SX Auto Dark green
1977 CX 2400 Pallas C-Matic 'Aphrodite' Regatta Blue
1982 GSA Pallas SE Silver Pearl
1980 CX 2000 Reflex Vallelunga Red
1978 CX 2400 Pallas C-Matic 'Prometheus' Midnight blue
1984 BX 14E 'Cecil the slugmobile' Maroon
1987 Fiat Panda 'the mighty panda'
x 97

Re: More questions on 1.9TD fuel air leaks.

Post by aerodynamica »

Aye might do
Graeme M
2008 C5 Exclusive Tourer 2.0 HDi
aerodynamica
Donor 2023
Posts: 1299
Joined: 26 Dec 2007, 18:10
Location: Glasgow
Lexia Available: Yes
My Cars: 2008 C5 Exclusive Tourer
1993 Xantia 1.9 TD VSX Mk1 Sinker A.K.A Slugmobile 13'
'Old Katy'
previous convictions: totaling 52litres of LHM in one go:
1968 ID19B 'Old Polly' Stellar white
1993 Xantia 1.9 TD SX Mk1 Sinker Silver
1992 XM 2.0 SEi Turbo Manual Anthracite Grey
1982 CX 20 Pallas 'Old Goldy'
1993 XM 2.1 SD Auto Light blue
1993 Xantia 1.9 TD SX Mk1 Sinker light Blue
1982 BX 16 TRS 'Cyril' Vallelunga Red
1995 Xantia 1.9 D SX Auto Dark green
1977 CX 2400 Pallas C-Matic 'Aphrodite' Regatta Blue
1982 GSA Pallas SE Silver Pearl
1980 CX 2000 Reflex Vallelunga Red
1978 CX 2400 Pallas C-Matic 'Prometheus' Midnight blue
1984 BX 14E 'Cecil the slugmobile' Maroon
1987 Fiat Panda 'the mighty panda'
x 97

Re: More questions on 1.9TD fuel air leaks.

Post by aerodynamica »

Right! this evening I have had the fuel tank pick up out and found it to be nothing like as bad as the above picture - one or two black blobs caught in the gauze but essentially clear. There were some brown, rotted wood looking things in the tank below where the pick up would locate but not enough to block it up. I was unsuccessful in removing them.
I reattached the fuel supply and return connections with new tight jubilee clips.
There was a little bit of evidence that there was an air leak at the filter housing on the thermostat housing as I was using the priming bulb and upon release heard a just-audible micro whine of air being drawn. I cannot pinpoint it at all. Checked the recently fitted new pipes and all seemed good.
I now realise the bulb is not holding so have a new one en route. I hope it arrives tomorrow.
I'll fit it tomorrow night if it arrives.
Graeme M
2008 C5 Exclusive Tourer 2.0 HDi
User avatar
Xaccers
Posts: 7654
Joined: 07 Feb 2007, 23:46
Location: Milling around Milton Keynes
My Cars:
x 184

Re: More questions on 1.9TD fuel air leaks.

Post by Xaccers »

aerodynamica wrote:Good grief that's bad. Well, it's coming out!!

Xac, I'm hoping to bypass the entire fuel filter housing for a period. I have used a stretch of rubber glove cutting jubilee clipped to seal off that thermostat at the side purely temporary to try and eliminate it from the inquiry - still got the probs though!
Do not run without a filter in the fuel line.
1.9TD+ SX Xantia Estate (Cassy) running on 100% veg
1.9TD SX Xantia Hatchback (Jenny) running on 100% veg for sale
Laguna II 2.0dCi Privilege (Monty)

DIY sphere tool
aerodynamica
Donor 2023
Posts: 1299
Joined: 26 Dec 2007, 18:10
Location: Glasgow
Lexia Available: Yes
My Cars: 2008 C5 Exclusive Tourer
1993 Xantia 1.9 TD VSX Mk1 Sinker A.K.A Slugmobile 13'
'Old Katy'
previous convictions: totaling 52litres of LHM in one go:
1968 ID19B 'Old Polly' Stellar white
1993 Xantia 1.9 TD SX Mk1 Sinker Silver
1992 XM 2.0 SEi Turbo Manual Anthracite Grey
1982 CX 20 Pallas 'Old Goldy'
1993 XM 2.1 SD Auto Light blue
1993 Xantia 1.9 TD SX Mk1 Sinker light Blue
1982 BX 16 TRS 'Cyril' Vallelunga Red
1995 Xantia 1.9 D SX Auto Dark green
1977 CX 2400 Pallas C-Matic 'Aphrodite' Regatta Blue
1982 GSA Pallas SE Silver Pearl
1980 CX 2000 Reflex Vallelunga Red
1978 CX 2400 Pallas C-Matic 'Prometheus' Midnight blue
1984 BX 14E 'Cecil the slugmobile' Maroon
1987 Fiat Panda 'the mighty panda'
x 97

Re: More questions on 1.9TD fuel air leaks.

Post by aerodynamica »

fair enough. I will be bypassing that awful Peugeot - designed plastic thing as it's universally known to be trouble - I want to bypass it to allow the car to run, remove it and thoroughly investigate where it is leaking.

I am going to fit a filter in line so that there is a filter present.

I got the new priming bulb and it is in place. It operates much stronger than the old one, still no sign of where the air leak is though.

The outgoing bulb is definitely faulty having tested it off the car. Still, useful for other uses like syphoning etc.

Car starts well now but only tomorrow morning will tell..
Graeme M
2008 C5 Exclusive Tourer 2.0 HDi
User avatar
Xaccers
Posts: 7654
Joined: 07 Feb 2007, 23:46
Location: Milling around Milton Keynes
My Cars:
x 184

Re: More questions on 1.9TD fuel air leaks.

Post by Xaccers »

Get to B&Q and buy some clear hose.
1.9TD+ SX Xantia Estate (Cassy) running on 100% veg
1.9TD SX Xantia Hatchback (Jenny) running on 100% veg for sale
Laguna II 2.0dCi Privilege (Monty)

DIY sphere tool
Rhothgar
Donor 2023
Posts: 1758
Joined: 22 Nov 2004, 00:21
Location: Nottingham - UK
My Cars: 2013 Peugeot 3008 Allure 1.6HDi - FD63 FWA VF3**************[VIN obfuscated, can be read by forum staff]
1995 Citroen Xantia 1.9TD S1 - M728 GDL VF7**************[VIN obfuscated, can be read by forum staff]
1996 Citroen Xantia 1.9TD SX S1 - N707 MGP (Currrently laid up)
2000 Citroen Xantia 2.0 HDi S2 - X435 JGJ VF7**************[VIN obfuscated, can be read by forum staff] (Clutch died Dec 2017 - Resurrected Easter Sunday 2021)
1997 Citroen ZX SX TD - P788 AJL
1959 Landrover Defender S2 - Two owners from new
1968 Triumph Vitesse Convertible 2.0
1980 Ford Escort RS2000 Customer - 2nd Owner
1988 Saab 900 T16S - A 1980's exercise in understated Hooliganism...
Oh! and two Harley Davidsons - A 1990 Sportster and a 2003 Fatboy 100th Anniversary (the only vehicle I have owned from new)
x 78

Re: More questions on 1.9TD fuel air leaks.

Post by Rhothgar »

aerodynamica wrote:Car starts well now but only tomorrow morning will tell..
I'm on tenterhooks here. Don't know about anyone else!

I have had a problem which has been bugging since late last year and it could be the answer to my issue to so...

HOW DID IT START THIS MORNING?
Rhothgar
Donor 2023
Posts: 1758
Joined: 22 Nov 2004, 00:21
Location: Nottingham - UK
My Cars: 2013 Peugeot 3008 Allure 1.6HDi - FD63 FWA VF3**************[VIN obfuscated, can be read by forum staff]
1995 Citroen Xantia 1.9TD S1 - M728 GDL VF7**************[VIN obfuscated, can be read by forum staff]
1996 Citroen Xantia 1.9TD SX S1 - N707 MGP (Currrently laid up)
2000 Citroen Xantia 2.0 HDi S2 - X435 JGJ VF7**************[VIN obfuscated, can be read by forum staff] (Clutch died Dec 2017 - Resurrected Easter Sunday 2021)
1997 Citroen ZX SX TD - P788 AJL
1959 Landrover Defender S2 - Two owners from new
1968 Triumph Vitesse Convertible 2.0
1980 Ford Escort RS2000 Customer - 2nd Owner
1988 Saab 900 T16S - A 1980's exercise in understated Hooliganism...
Oh! and two Harley Davidsons - A 1990 Sportster and a 2003 Fatboy 100th Anniversary (the only vehicle I have owned from new)
x 78

Re: More questions on 1.9TD fuel air leaks.

Post by Rhothgar »

?
aerodynamica
Donor 2023
Posts: 1299
Joined: 26 Dec 2007, 18:10
Location: Glasgow
Lexia Available: Yes
My Cars: 2008 C5 Exclusive Tourer
1993 Xantia 1.9 TD VSX Mk1 Sinker A.K.A Slugmobile 13'
'Old Katy'
previous convictions: totaling 52litres of LHM in one go:
1968 ID19B 'Old Polly' Stellar white
1993 Xantia 1.9 TD SX Mk1 Sinker Silver
1992 XM 2.0 SEi Turbo Manual Anthracite Grey
1982 CX 20 Pallas 'Old Goldy'
1993 XM 2.1 SD Auto Light blue
1993 Xantia 1.9 TD SX Mk1 Sinker light Blue
1982 BX 16 TRS 'Cyril' Vallelunga Red
1995 Xantia 1.9 D SX Auto Dark green
1977 CX 2400 Pallas C-Matic 'Aphrodite' Regatta Blue
1982 GSA Pallas SE Silver Pearl
1980 CX 2000 Reflex Vallelunga Red
1978 CX 2400 Pallas C-Matic 'Prometheus' Midnight blue
1984 BX 14E 'Cecil the slugmobile' Maroon
1987 Fiat Panda 'the mighty panda'
x 97

Re: More questions on 1.9TD fuel air leaks.

Post by aerodynamica »

Sorry on the tardy reply rhothgar.
Right so it still doesn't start quickly. I still have to prime the new bulb to get strong starting. Also I still note that there sounds like a lot of space being filled by the priming. if I prime it before trying to start it'll start like a new one.
I do note a marked improvement in the running performance now. It's as though itvwas running of 50% bubbles before.
But where is this leak? I replaced the leakoffs pipes, fuel line in and out the filter, new clips all round including the tank pick up and still its leaking internally. Has to be the filter housing or the diesel pump itself.
Another plus is that it hasn't shown a hint of cutting out in the morning now.
Graeme M
2008 C5 Exclusive Tourer 2.0 HDi
Rhothgar
Donor 2023
Posts: 1758
Joined: 22 Nov 2004, 00:21
Location: Nottingham - UK
My Cars: 2013 Peugeot 3008 Allure 1.6HDi - FD63 FWA VF3**************[VIN obfuscated, can be read by forum staff]
1995 Citroen Xantia 1.9TD S1 - M728 GDL VF7**************[VIN obfuscated, can be read by forum staff]
1996 Citroen Xantia 1.9TD SX S1 - N707 MGP (Currrently laid up)
2000 Citroen Xantia 2.0 HDi S2 - X435 JGJ VF7**************[VIN obfuscated, can be read by forum staff] (Clutch died Dec 2017 - Resurrected Easter Sunday 2021)
1997 Citroen ZX SX TD - P788 AJL
1959 Landrover Defender S2 - Two owners from new
1968 Triumph Vitesse Convertible 2.0
1980 Ford Escort RS2000 Customer - 2nd Owner
1988 Saab 900 T16S - A 1980's exercise in understated Hooliganism...
Oh! and two Harley Davidsons - A 1990 Sportster and a 2003 Fatboy 100th Anniversary (the only vehicle I have owned from new)
x 78

Re: More questions on 1.9TD fuel air leaks.

Post by Rhothgar »

Hi aerodynamica

It doesn't matter about tardy reply as you put it, I am just curious as to what the fix is as mine started idling rough on startup after using Biofuel. Bloody wrecked the fuel filter and I am sure some bits got transferred to pump along the way.

It's so irritating this tiny leak (I assume air leak) that causes it to idle rough for 20 seconds or so on start up.

I figured it might be the underside of the fuel filter housing needing a new O-ring but cannot see a leak anyway even after steam cleaning.

When I was down at Jim's on Saturday he suggested that it could be internals on mine but he didn't see it for himself as my engine nevers gets cold as his place. He did say it is one of the sweetest 1.9TD's he's ever heard running. He has a keen ear! Sounds just like a noisy lump to me.
aerodynamica
Donor 2023
Posts: 1299
Joined: 26 Dec 2007, 18:10
Location: Glasgow
Lexia Available: Yes
My Cars: 2008 C5 Exclusive Tourer
1993 Xantia 1.9 TD VSX Mk1 Sinker A.K.A Slugmobile 13'
'Old Katy'
previous convictions: totaling 52litres of LHM in one go:
1968 ID19B 'Old Polly' Stellar white
1993 Xantia 1.9 TD SX Mk1 Sinker Silver
1992 XM 2.0 SEi Turbo Manual Anthracite Grey
1982 CX 20 Pallas 'Old Goldy'
1993 XM 2.1 SD Auto Light blue
1993 Xantia 1.9 TD SX Mk1 Sinker light Blue
1982 BX 16 TRS 'Cyril' Vallelunga Red
1995 Xantia 1.9 D SX Auto Dark green
1977 CX 2400 Pallas C-Matic 'Aphrodite' Regatta Blue
1982 GSA Pallas SE Silver Pearl
1980 CX 2000 Reflex Vallelunga Red
1978 CX 2400 Pallas C-Matic 'Prometheus' Midnight blue
1984 BX 14E 'Cecil the slugmobile' Maroon
1987 Fiat Panda 'the mighty panda'
x 97

Re: More questions on 1.9TD fuel air leaks.

Post by aerodynamica »

It's still doing the crappy yet 100% successful starting. It takes a whole 7 -10 sec of cranking at times before it catches and then it'll run lumpy then less lumpy yet not smooth and then smooth. Even if I prime the fuel bulb in advance of starting it'll sometimes start like this.

Has new fuel leakoffs, line onto and out of filter housing, recent filter, 4 new glowplugs and a new priming bulb, all new pile end clips, and checked the fuel pick up in the tank. Dunno about anyone else but I think the only two things left are the filter housing and the diesel pump itself having a fault.
Graeme M
2008 C5 Exclusive Tourer 2.0 HDi
Rhothgar
Donor 2023
Posts: 1758
Joined: 22 Nov 2004, 00:21
Location: Nottingham - UK
My Cars: 2013 Peugeot 3008 Allure 1.6HDi - FD63 FWA VF3**************[VIN obfuscated, can be read by forum staff]
1995 Citroen Xantia 1.9TD S1 - M728 GDL VF7**************[VIN obfuscated, can be read by forum staff]
1996 Citroen Xantia 1.9TD SX S1 - N707 MGP (Currrently laid up)
2000 Citroen Xantia 2.0 HDi S2 - X435 JGJ VF7**************[VIN obfuscated, can be read by forum staff] (Clutch died Dec 2017 - Resurrected Easter Sunday 2021)
1997 Citroen ZX SX TD - P788 AJL
1959 Landrover Defender S2 - Two owners from new
1968 Triumph Vitesse Convertible 2.0
1980 Ford Escort RS2000 Customer - 2nd Owner
1988 Saab 900 T16S - A 1980's exercise in understated Hooliganism...
Oh! and two Harley Davidsons - A 1990 Sportster and a 2003 Fatboy 100th Anniversary (the only vehicle I have owned from new)
x 78

Re: More questions on 1.9TD fuel air leaks.

Post by Rhothgar »

Jim reckoned it could all be down to glowplugs on a previous post for mine.

I fitted NGK and most people concur that Beru are the only GP's for a Xantia.
wotwot
(Donor 2021)
Posts: 307
Joined: 13 Jul 2010, 08:59
Location: chelmsford, essex.
My Cars: 1982 GSA 1299
1984 bx 1600
zx 5 door x 2
xantia estate
dispatch
xara picasso
806
807 SE
x 4

Re: More questions on 1.9TD fuel air leaks.

Post by wotwot »

most likely filter housing I would think,thats assuming you cant see any wet areas around the pump.
You may have to check underneath the top plastic cambelt cover to see if it leaks at the sprocket end.
I have read through the post but cant remember if you checked the fuel filter housing.
A new "o" ring at the base and a new one where the little thermostat is at the rear and bottom of the housing.Got both mine from the local motor spares shop for £1.
aerodynamica
Donor 2023
Posts: 1299
Joined: 26 Dec 2007, 18:10
Location: Glasgow
Lexia Available: Yes
My Cars: 2008 C5 Exclusive Tourer
1993 Xantia 1.9 TD VSX Mk1 Sinker A.K.A Slugmobile 13'
'Old Katy'
previous convictions: totaling 52litres of LHM in one go:
1968 ID19B 'Old Polly' Stellar white
1993 Xantia 1.9 TD SX Mk1 Sinker Silver
1992 XM 2.0 SEi Turbo Manual Anthracite Grey
1982 CX 20 Pallas 'Old Goldy'
1993 XM 2.1 SD Auto Light blue
1993 Xantia 1.9 TD SX Mk1 Sinker light Blue
1982 BX 16 TRS 'Cyril' Vallelunga Red
1995 Xantia 1.9 D SX Auto Dark green
1977 CX 2400 Pallas C-Matic 'Aphrodite' Regatta Blue
1982 GSA Pallas SE Silver Pearl
1980 CX 2000 Reflex Vallelunga Red
1978 CX 2400 Pallas C-Matic 'Prometheus' Midnight blue
1984 BX 14E 'Cecil the slugmobile' Maroon
1987 Fiat Panda 'the mighty panda'
x 97

Re: More questions on 1.9TD fuel air leaks.

Post by aerodynamica »

Well it's the only thing left and if it only costs a pound why not.. would you know the o-ring sizes needed?
Graeme M
2008 C5 Exclusive Tourer 2.0 HDi
Post Reply