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Thon



Member Since: 22 Nov 2015
Location: Salisbury Plain
Posts: 696

United Kingdom 
Question for caravan towers - diesel soot
Evening all,

We recently purchased a caravan and whilst i'm comfortable with all the other aspects of ownership so far, am a bit puzzled / peeved as to how much soot ends up on the front of the van, and back of the Defender (standard 110 tdci 2.4). This is the result of around 8 hours driving, and no, it is not a heavy smoker in general although it does get caned fairly hard when towing: -


Click image to enlarge


Is this normal and if so has anyone done anything to reduce it? I'm thinking of the following ideas: -

1. Using a "bikini" cover on the front of the 'van during transit
2. Adding an exhaust tip to point the outlet downwards / sideways
3. Nearside wheel arch side exhaust outlet
4. Use my other tow car which has a DPF .....

I've cleaned it off for now, with some effort and have added several layers of wax polish to help in future washes but wondered if anyone had any better suggestions or had tried any of mine above?

Many Thanks!
Post #857136 20th Sep 2020 9:29pm
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custom90



Member Since: 21 Jan 2010
Location: South West, England.
Posts: 20416

United Kingdom 
Add a black vinyl wrap in that location?
It’ll be caused by airflow backdraft, similar to the issue which pulls mudflaps into the tyres.
I find on mine with a trailer on I often get hay and stuff stuck to the back of the 90 up around the windscreen washer etc so a draft must blow up though. $W33T $0U7H3RN $UG4R
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Post #857137 20th Sep 2020 9:47pm
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LR90XS2011



Member Since: 05 Apr 2011
Location: bickenhill
Posts: 3643

United Kingdom 2011 Defender 90 Puma 2.4 XS CSW Galway Green
started towing a van last year with my 2.4 90 not seen any evidence of this, but on the 90 the exhaust is pointed out to the passenger side DEFENDER 90 TDCI XS,

I hope everyone is well and your land rovers make you happy
Post #857168 21st Sep 2020 7:22am
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jst



Member Since: 14 Jan 2008
Location: Taunton
Posts: 8049

 2011 Defender 110 Puma 2.4 USW Stornoway Grey
is that a regular occurence of pics of the first time it was driven hard whilst towing, ie it may just be cleaning it out.

whats the vehicles normal economy? Cheers

James
110 2012 XS Utility
130 2011 M57 bespoke Camper
90 2010 Hardtop
90 M57 1988 Hardtop
Post #857198 21st Sep 2020 11:45am
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X4SKP



Member Since: 29 Nov 2013
Location: Berkshire
Posts: 2295

United Kingdom 2010 Defender 90 Puma 2.4 SW Stornoway Grey
Hello Thon

Yes it looks like the van is in the direct line of flow, so your suggestions sound logical
I'd try the 'down and out pipe' idea initially.

Our 90 with it's side out biased pipes hasn't suffered the same and is a visual non-smoker.


Click image to enlarge


Good Luck SKIP
https://www.defender2.net/forum/topic83242.html
Post #857210 21st Sep 2020 1:02pm
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hank



Member Since: 12 Sep 2016
Location: South Wales
Posts: 2301

Wales 2007 Defender 110 Puma 2.4 DCPU Stornoway Grey
Re: Question for caravan towers - diesel soot
Thon wrote:


Is this normal and if so has anyone done anything to reduce it? I'm thinking of the following ideas: -

1. Using a "bikini" cover on the front of the 'van during transit
2. Adding an exhaust tip to point the outlet downwards / sideways
3. Nearside wheel arch side exhaust outlet
4. Use my other tow car which has a DPF .....


All four options are fine, but none address the root cause. I feel like a bit of a broken record at the moment, but mine was smoking a bit under load and left a soot mark on the front of my trailer which I had dismissed as being remap related as tuned diesels do tend to smoke a bit, but actually now that I've done the injector seals it doesn't smoke whatsoever!

I don't know why exactly, perhaps a sensor was picking something up and the ECU was adding extra fuel to compensate or something? Or the excess crankcase pressure was blowing oil into the intake and generating smoke? Not sure but either way could be something to look into. Have a look here https://www.defender2.net/forum/topic74338.html > 110 XS Double Cab
Post #857213 21st Sep 2020 1:22pm
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hank



Member Since: 12 Sep 2016
Location: South Wales
Posts: 2301

Wales 2007 Defender 110 Puma 2.4 DCPU Stornoway Grey
You can see mine smoking while towing here... Will have to get an 'after' video for comparison next time I tow!

 > 110 XS Double Cab
Post #857214 21st Sep 2020 1:24pm
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Fat Cog



Member Since: 19 Mar 2012
Location: Oxfordshire & Devon
Posts: 502

United Kingdom 2016 Defender 90 Puma 2.2 HT Corris Grey
A good illustration why Derv vehicles are being banned...I'm at pains to admit this but it's hard to argue against, especially if you live in a city. Since 1973...S1, Air Portable's, Defender's, but only my Wolf TUL HS GS remains
Post #857215 21st Sep 2020 1:37pm
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Rashers



Member Since: 21 Jun 2015
Location: Norfolk
Posts: 3507

United Kingdom 2014 Defender 110 Puma 2.2 USW Corris Grey
The answer is a Petrol V8 Rolling with laughter

Good luck towing with that. I would be bankrupt by the time I got to the camp site Rolling with laughter
Post #857216 21st Sep 2020 1:42pm
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Fat Cog



Member Since: 19 Mar 2012
Location: Oxfordshire & Devon
Posts: 502

United Kingdom 2016 Defender 90 Puma 2.2 HT Corris Grey
The journey would sound a whole lot better though!!! Since 1973...S1, Air Portable's, Defender's, but only my Wolf TUL HS GS remains
Post #857217 21st Sep 2020 1:43pm
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Rashers



Member Since: 21 Jun 2015
Location: Norfolk
Posts: 3507

United Kingdom 2014 Defender 110 Puma 2.2 USW Corris Grey
Thumbs Up Can’t argue at that.
Post #857221 21st Sep 2020 2:28pm
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VVS210



Member Since: 12 Nov 2016
Location: Hampshire
Posts: 953

United Kingdom 
Rashers wrote:
The answer is a Petrol V8 Rolling with laughter

Good luck towing with that. I would be bankrupt by the time I got to the camp site Rolling with laughter


My first Land Rover was a V8 Hi-cap which was used for towing a heavy exhibition unit, it regularly returned single figure mpg...

But apparently petrol is now the lesser of the two evils as a friend of mine in London discovered after having to replace their D4 SdV6 with dpf etc wi a 5.0l SC Range Rover so they can drive in the ULEZ... Whistle
Post #857274 21st Sep 2020 7:30pm
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90 Dreamer



Member Since: 13 Jul 2019
Location: Oop North
Posts: 2163

United Kingdom 2016 Defender 90 Puma 2.2 HT Corris Grey
Far more likely you have some sort of issue ......
Post #857275 21st Sep 2020 7:34pm
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Thon



Member Since: 22 Nov 2015
Location: Salisbury Plain
Posts: 696

United Kingdom 
custom90steve wrote:
Add a black vinyl wrap in that location?
It’ll be caused by airflow backdraft, similar to the issue which pulls mudflaps into the tyres.
I find on mine with a trailer on I often get hay and stuff stuck to the back of the 90 up around the windscreen washer etc so a draft must blow up though.


Agreed and might well be the simplest solution. Thumbs Up
Post #857322 21st Sep 2020 9:43pm
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Thon



Member Since: 22 Nov 2015
Location: Salisbury Plain
Posts: 696

United Kingdom 
jst wrote:
is that a regular occurence of pics of the first time it was driven hard whilst towing, ie it may just be cleaning it out.

whats the vehicles normal economy?


I've only taken the 'van out on 3 trips so far but it gets used quite hard most of the time so don't think it likely to be a "clear-out". Normal economy is 25 - 28 Mpg (remember it's caged and drags a Hannibal rack around on it), emissions within limits, 70K miles, standard engine with centre silencer removed and Nugget intake, maintained correctly by you-know-who.
Post #857324 21st Sep 2020 9:46pm
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