 | Home > Puma (Tdci) > Toxic smell from exhaust |
 
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| Bluericky Member Since: 26 Jun 2014 Location: Cornwall Posts: 647   
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Hi all,
My defender has an extremely strong and toxic smell from the exhaust. This is my second TDCI and the last one did not smell like this. It smells very chemically The smell literally wafts even on a still day and quite a few people have now mentioned it ! It's not sulphur so I shouldn't think it's the cat but has anyone else had this experience ? It's a 2.4, has been serviced recently and is running completely standard with no mods. Drives perfectly but I am suspicious as it's considerably faster and more grunty than my last ! Any ideas hugely appreciated Rich |
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29th Sep 2017 8:35am |
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| ian series 1 Member Since: 17 Nov 2014 Location: south Posts: 3127 
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Has it got a cat fitted?.....
 80" 80" 86" 88" 90"
Wanted, Forward Control Anything considered. |
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29th Sep 2017 8:44am |
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| Bluericky Member Since: 26 Jun 2014 Location: Cornwall Posts: 647
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Hi Ian thanks for the reply.
How would I be able to tell ? Am I right in saying that the decat pipes are made to look like they do have a cat for MOT etc ?! |
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29th Sep 2017 10:59am |
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| blackwolf Member Since: 03 Nov 2009 Location: South West England Posts: 17367 
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For info, I have run my 2007 TDCi both with and without a cat during the time I've owned it and there was no perceptible difference in smell (it has had the same slightly acrid dieselly smell all the time).
Most decat pipes do not have a 'fake' cat, so if you look at the pipe immediately below the flange which secures it to the turbo, a cat will be visible as a substantial can-shaped object, whereas most decat pipes are plain pipe. There is a heat-shield fitted round the cat, so it is better to look up from underneath rather than down from above. Some owners however "decat" their 2.4 TDCis by drilling or knocking the ceramic matrix out from inside the standard cat can. If this has been done, you will not be able to tell unless you remove the pipe from the vehicle (or remove the turbo) and look down the pipe. |
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29th Sep 2017 11:19am |
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| Kit Member Since: 12 Feb 2016 Location: Shropshire Posts: 1110 
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I'd agree with blackwolf and there's certainly no toxic smell from my 200 tdi (no cat) 1993 200 Tdi 90 CSW
1956 Series 1 Hard-top 1958 Series 1 Soft-top |
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29th Sep 2017 11:26am |
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| Bluericky Member Since: 26 Jun 2014 Location: Cornwall Posts: 647
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the Landy came from the Balmoral Estate and I would therefore be surprised if it had the cat removed ! I'll have a good look though.
Is it a symptom that could be related to the injectors or pressure valves on the fuel rail ? I was hoping to get a BAS tune at some point but want to make sure everything's in order before I do |
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29th Sep 2017 11:37am |
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| YOLO110 Member Since: 14 Feb 2015 Location: Perth Oz and Stansted UK Posts: 1642 
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When I start my 2015 2.2 Puma from cold, it totally stinks... of combusted diesel.. not a nice smell at all.
Once warmed up, no such 'issue'... DPF and CAT fitted...  YOLO... You Only Live Once... |
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29th Sep 2017 2:07pm |
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| jst Member Since: 14 Jan 2008 Location: Taunton Posts: 8021  
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our ones at work, when they have been sat idling for long periods followed by short sessions of low range low speed work have abit of a chemical smell to them. it clears with time on a good run.
all std vehicles with CATs What sort of journey times are you doing when it smells? Cheers James 110 2012 XS Utility 130 2011 M57 bespoke Camper 90 2010 Hardtop 90 M57 1988 Hardtop |
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29th Sep 2017 2:34pm |
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| miker Member Since: 13 Sep 2015 Location: Surrey Posts: 1763 
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My van with the 2.2 (and cat and dpf) has a bit of an acrid chemically smell when cold. Assumed it was just a feature of the engine!
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29th Sep 2017 4:18pm |
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| zsd-puma Member Since: 09 Aug 2016 Location: Kent Posts: 2720 
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My 2.4 Defender just smells of diesel smoke.
But i do remember my old Jaguar X-Type which had the 2.2 Puma engine, sometimes smelled as you describe when it was cold, ok once it warmed up. |
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29th Sep 2017 7:37pm |
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| pannawonica Member Since: 21 Nov 2010 Location: Clackline Western Australia Posts: 568
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I always thought the X-type had a car type Diesel engine, not a puma! That could be useful regarding common parts if so¡
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30th Sep 2017 1:24am |
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| Bluericky Member Since: 26 Jun 2014 Location: Cornwall Posts: 647
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Thanks for the tips. I’m going to go down the injector route I think. Get them all tested etc . There are absolutely zero fault codes showing , was expecting to see one or two !
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3rd Oct 2017 5:22pm |
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| zsd-puma Member Since: 09 Aug 2016 Location: Kent Posts: 2720
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The X-Type and the Mondeo mk3 both used the Puma engine. You also find the Puma engine in the PSA/Fiat vans (Relay/Ducato/Boxer). The X-Type used a 2ltr lump or a 2.2ltr (without DPF prior to 2008). So not much is going to fit a 2.4. The 2.2 X-type is closer to the 2.4 in the defender than the 2ltr is. The mk4 mondeo however switched to the PSA DW12 engine, used in the various Citroens, Puegeots, the Freelander2 and Jaguar XF, so don't cofuse those as they're a completely unrelated lump. |
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3rd Oct 2017 8:33pm |
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| Bluericky Member Since: 26 Jun 2014 Location: Cornwall Posts: 647
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Thanks all for you replies.
My gut feeling is that it’s an injector leaking. I changed all the glow plugs last week (a bit of a fiddle!) to see if that cured my hard starting and smoke. It has and now fires on the button with no engine wobble and no noticeable smoke. They must play a more important roll than on the older engines as I imagine the ecu switches them on occasionally for emissions or similar. Anyhow back to the point. I removed the inlet manifold to access the plugs and was horrified by how much carbon had formed inside, we’re talking a fairly serious amount , I cleaned it all out with a screwdriver, bottle brush and engine cleaner , then ran a can of EGR cleaner through the system , I can now hear the egr self cleaning again on switch off, something I hadn’t even noticed was missing until I heard it again ! I removed the glow plugs and number two was drenched in black liquid , finer than oil and smelt like diesel , two others were wet and only one was dry ! Are your opinions that this is a leaking injector or something more serious ? The landy is tunning sweet as a nut apart from the very strong smell come out the back end and light small amount greyish smoke on acceleration . It’s a bit better after a few Miles but still a bit stinky .  Click image to enlarge Click image to enlarge Click image to enlarge |
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22nd Nov 2017 11:42am |
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