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freypal

Member Since: 08 Sep 2016
Location: Shropshire
Posts: 55

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!

26th Aug 2023 5:21 pm

Chrism551

Member Since: 01 Feb 2021
Location: Blackpool
Posts: 142

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.

26th Aug 2023 5:53 pm

Rommel

Member Since: 20 Aug 2017
Location: Sandhurst Berkshire
Posts: 512

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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Nagging Old Boiler.

26th Aug 2023 6:55 pm

freypal

Member Since: 08 Sep 2016
Location: Shropshire
Posts: 55

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?

26th Aug 2023 9:50 pm

Lightwater

Member Since: 21 Aug 2014
Location: Sydney Northern Beaches
Posts: 4734

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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27th Aug 2023 5:13 am

freypal

Member Since: 08 Sep 2016
Location: Shropshire
Posts: 55

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.

27th Aug 2023 7:35 am

Grue

Member Since: 29 Apr 2018
Location: New Zealand
Posts: 338

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."

4th Sep 2023 10:15 pm

Nodge68

Member Since: 15 Jul 2020
Location: Newquay
Posts: 1832

2009 Freelander 2 TD4 SE Manual Rimini Red

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. 2009 Rimini Red SE TD4. Soon to be sold.
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5th Sep 2023 6:53 pm

Mikey

Member Since: 07 Jun 2008
Location: Dundee
Posts: 778

2012 Freelander 2 SD4 HSE Auto Baltic Blue

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

5th Sep 2023 9:43 pm

John E.

Member Since: 02 Apr 2023
Location: SE Cornwall
Posts: 91

2011 Freelander 2 SD4 HSE Auto Lago Grey

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.

6th Sep 2023 10:56 am

John E.

Member Since: 02 Apr 2023
Location: SE Cornwall
Posts: 91

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!

6th Sep 2023 10:58 am

John E.

Member Since: 02 Apr 2023
Location: SE Cornwall
Posts: 91

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!

6th Sep 2023 10:59 am

11slayer11

Member Since: 25 Jan 2016
Location: Notttinghamshire
Posts: 9

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?

26th Sep 2023 1:50 pm

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