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freypal



Member Since: 08 Sep 2016
Location: Shropshire
Posts: 55
United Kingdom 2014 Freelander 2 TD4 GS Manual Orkney Grey
Exhaust Manifold Leaking - Cabin Fumes

Hi all, for a while now we've been getting a diesel fume smell in the cabin coming in through the vents on our 2014 td4. I'm near certain it's coming from the exhaust manifold as if you stop the car during a dpf regen cycle there is a massive amount of smoke visible from the back of the engine block against the bulkhead.

It had been leaking a bit for a while and then it got worse after the dpf was removed and refitted which I assume disturbed it.

Question is, I believe access to the manifold is tricky? I was told by a local specialist that it's an engine out job to get it off and re-seal it all properly which I don't really believe... looking online it appears you can gain better access from the top by removing a panel that sits behind the block against the bulkhead (some kind of firewall?). Has anyone got any experience of an exhaust manifold off and swap job? Trying to gauge difficulty, time and what it should cost etc...

Thanks!
Post #435245 26th Aug 2023 5:21 pm
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Chrism551



Member Since: 01 Feb 2021
Location: Blackpool
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2012 Freelander 2 SD4 XS Auto Santorini Black

Can’t comment on access to the manifold but if fumes are getting into the cabin, check the battery cover and more importantly the seal around it as that can allow engine fumes to be drawn into heater box.
Post #435248 26th Aug 2023 5:53 pm
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Rommel



Member Since: 20 Aug 2017
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England 2013 Freelander 2 TD4 XS Manual Fuji White

I would also check the turbo hose possibly for leaks ? ? 2013 FL2 XS.
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Post #435249 26th Aug 2023 6:55 pm
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freypal



Member Since: 08 Sep 2016
Location: Shropshire
Posts: 55
United Kingdom 2014 Freelander 2 TD4 GS Manual Orkney Grey

I'd checked the airbox and it's all clipped in and sealed. It's definitely leaking fumes from the back of the engine. Turbo hose I don't believe is in this area? Isn't it all rigid pipes at the back?
Post #435256 26th Aug 2023 9:50 pm
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Lightwater



Member Since: 21 Aug 2014
Location: Sydney Northern Beaches
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Ukraine 2013 Freelander 2 2.0T SE Auto Fuji White

The only unsealed hole into the cabin is the cabin vent. If that is closed (recirculating air) then there shouldn't be really any air from the engine bay leaking into the cabin.

Click image to enlarge
(photo after cleaning layers of dust)

There are in some respects 2 firewalls. Air will leak through the various joins of the forward firewall. Parts are not hermetically sealed. But the vent when closed is pretty good at sealing (rear firewall) you can see it behind the battery a bit to the centre of the car.

It doesn't actually solve the problem, but it might narrow down another air leak into the cabin.

The way the space is designed between the 2 firewalls is to circulate air to remove dust before it even gets to the cabin filter. Also air circulation around the battery to keep it cool. Procrastination, mankind's greatest labour saving device!

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Post #435258 27th Aug 2023 5:13 am
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freypal



Member Since: 08 Sep 2016
Location: Shropshire
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United Kingdom 2014 Freelander 2 TD4 GS Manual Orkney Grey

Sorry I should have said this only happens with the fans blowing and not on re-circ. If you turn the fans off there isn't really an issue.
Post #435260 27th Aug 2023 7:35 am
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Grue



Member Since: 29 Apr 2018
Location: New Zealand
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New Zealand 2007 Freelander 2 TD4 SE Auto Sumatra Black

Just posted this on another thread with a guy having smoke coming in through vents -

"have you taken the engine cover off and checked you're not leaking diesel onto the top of the manifold? That cooks off and gets sucked into the car easily, most noticeable when stopped."
Post #435468 4th Sep 2023 10:15 pm
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Nodge68



Member Since: 15 Jul 2020
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freypal wrote:
Sorry I should have said this only happens with the fans blowing and not on re-circ. If you turn the fans off there isn't really an issue.


The exhaust manifold is definitely not an engine out job, and anyone who says it is should be avoided.

However I doubt the exhaust manifold is leaking, as you'd hear it making a dreadful noise from the engine bay. Hyundai Ioniq 5 Ultimate. The family car.
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Post #435501 5th Sep 2023 6:53 pm
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Mikey



Member Since: 07 Jun 2008
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Not always. I've seen a few turbo flanges shear off the manifold, and it sounded completely normal
Post #435502 5th Sep 2023 9:43 pm
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John E.



Member Since: 02 Apr 2023
Location: SE Cornwall
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United Kingdom 2014 Freelander 2 SD4 Metropolis LE Auto Loire Blue

I’ve had this very job done recently.
The engine stayed in, but some of the mounts needed undoing to be able to twist the engine around its east - west axis to gaing proper access.
I had sheared bolts too; fortunately the head didn’t need removing for access.
£900-£1,000 inc VAT labour and new manifold.
Make sure the turbo actuator has a full range of movement before reassembly.
Post #435513 6th Sep 2023 10:56 am
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John E.



Member Since: 02 Apr 2023
Location: SE Cornwall
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United Kingdom 2014 Freelander 2 SD4 Metropolis LE Auto Loire Blue

Mikey wrote:
Not always. I've seen a few turbo flanges shear off the manifold, and it sounded completely normal

Just what Mikey said - it does stink when your stationary, the engine’s running, the fan is blowing & it’s not on air reciculation though!
Post #435514 6th Sep 2023 10:58 am
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John E.



Member Since: 02 Apr 2023
Location: SE Cornwall
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United Kingdom 2014 Freelander 2 SD4 Metropolis LE Auto Loire Blue

Mikey wrote:
Not always. I've seen a few turbo flanges shear off the manifold, and it sounded completely normal

Just what Mikey said - it does stink when your stationary, the engine’s running, the fan is blowing & it’s not on air reciculation though!
Post #435515 6th Sep 2023 10:59 am
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11slayer11



Member Since: 25 Jan 2016
Location: Notttinghamshire
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United Kingdom 2010 Freelander 2 SD4 HSE Auto Barolo Black

Have you found out what this is? I suspect I have the exact same issue. EGR replacement seems to have disturbed the exhaust manifold gasket.

Any idea on costs to repair?
Post #435928 26th Sep 2023 1:50 pm
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