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expatRob



Member Since: 24 Feb 2015
Location: Frankfurt
Posts: 58
Germany 2007 Defender 110 Puma 2.4 SW Tonga Green
Calling all DEFENDER Detectives - Mystery leak-black exhaust
I hope you all can help me with a challenge.

I have no error codes (MIL - error lights) etc.

Here are my symptoms:

When driving and I shift into 4th through 6th I get a black smoke out of the exhaust. Driving in town in 2nd and 3rd, no smoke.

When I am on highway it goes into limp mode. I pull over, turn off and re-start and all good.

I checked and I am losing Oil slowly, somewhere, not out the bottom, no leaks under engine.

I opened hood(bonnet) and I discovered black liquid spray on the Top Coolant hose area. The top coolant hose has a cover sleeve over it and when I squeeze it I get a good amount of oil on my hand. I also see oil spill on the pump in the attached photo.

I also had the little black plastic tube just pop out and clear liquid can out and I put it back in and re-clamped it. I don't know if that has anything to do with any of this.

If you all have any suggestions for me that would be great, I don't want to drive it until I have a plan, get parts and can drive it to the shop where I can work on it.
Post #817889 2nd Mar 2020 12:30pm
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Caterham



Member Since: 06 Nov 2008
Location: Birmingham
Posts: 6298
England 2011 Defender 110 Puma 2.4 XS CSW Stornoway Grey
a split in one of the air / boost rubber hoses?
Post #817892 2nd Mar 2020 12:44pm
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andydef90



Member Since: 09 Feb 2015
Location: yorkshire
Posts: 617
United Kingdom 2014 Defender 90 Puma 2.2 HT Corris Grey
your burning oil by the sounds of things get a mate to sit inside and press the accelerator see if is producing black smoke . any oil over the air air hose filter box any inside the air box ? clean all the oil off gunk will do it then try to locate the leak . check the coolant see if its sludge like if it is oil is entering the coolant system possibly a head gasket good luck rob
andy
Post #817894 2nd Mar 2020 12:46pm
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expatRob



Member Since: 24 Feb 2015
Location: Frankfurt
Posts: 58
Germany 2007 Defender 110 Puma 2.4 SW Tonga Green
But what could be causing the black smoke from exhaust?
Post #818017 3rd Mar 2020 3:04pm
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gilarion



Member Since: 05 Dec 2013
Location: Wales
Posts: 5110
Wales 2007 Defender 90 Other CSW Trident Green
Black smoke from the exhaust can be caused by burning oil but it is more likely to point to over-fueling. This might indicate faulty fuel injectors, sensors, or some type of issue with fuel pressure. For those who like Welsh Mountains and narrow boats have a look at my videos and photos at..

http://www.youtube.com/user/conwy1
Post #818020 3rd Mar 2020 3:40pm
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expatRob



Member Since: 24 Feb 2015
Location: Frankfurt
Posts: 58
Germany 2007 Defender 110 Puma 2.4 SW Tonga Green
Interesting. Do you know if any of these things would throw a warning light. I am not getting one and it is odd.
Post #818044 3rd Mar 2020 7:07pm
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blackwolf



Member Since: 03 Nov 2009
Location: South West England
Posts: 17372
United Kingdom 2007 Defender 110 Puma 2.4 DCPU Stornoway Grey
Oil tends to burn blue, black is more likely to be over-fuelling. It could be something as simple as a split intercooler hose. It is quite likely that it won't cause the MIL to illuminate, but there may be stored DTCs which provide a clue.
Post #818062 3rd Mar 2020 9:29pm
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jst



Member Since: 14 Jan 2008
Location: Taunton
Posts: 8024
 2011 Defender 110 Puma 2.4 USW Stornoway Grey
If it's going to limp mode there must be fault codes stored.

I didnt see a picture , small hose popping out? Do you mean oil feed on back of vacuum pump, ( it may be a return)

Black smoke is unburnt fuel, indicating too much fuel for available air, so check air supply. Hose integrity.

Without seeing it sounds like two problems.

1. Vacuum oil pipe came off, hence loss of oil and oil in engine bay.
2. Over fuelling die to lack of air, split intercooler pipe expanding releasing air at higher pressures.

Any noises under boost?

I expect if you drive it harder up the rev danger in lower gears it will do the same as 4 to 6th. Cheers

James
110 2012 XS Utility
130 2011 M57 bespoke Camper
90 2010 Hardtop
90 M57 1988 Hardtop
Post #818079 4th Mar 2020 7:41am
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Julie



Member Since: 07 Oct 2017
Location: Nantes
Posts: 484
France 2012 Defender 110 Puma 2.2 SW Keswick Green
Hi, is it a 2.2 or a 2.4 engine without DPF ?
Post #818713 7th Mar 2020 9:14pm
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BenB8man



Member Since: 22 Mar 2017
Location: Norfolk
Posts: 429
United Kingdom 2010 Defender 110 Puma 2.4 DCPU Stornoway Grey
His avatar thingy says its a 2.4, so no DPF. Smile
Post #818733 8th Mar 2020 4:31am
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