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Old 10-10-18, 06:15 PM   #1
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Default Fumes getting into cabin

Hi peeps, first post in this forum, so be gentle.

I picked up a 2006 407 SW to replace my 407 saloon and have a couple of initial issues.
There appears to be exhaust fumes getting into the car that seem to come from the dash air vents, no smoke comes from the exhaust that I can see, but the smell inside is quite unpleasant, and also the heater seems to need cranking up to 27 before it even starts to get warm.
Any temp set below that and you get the odd waft of cool air coming out...

Engine seems to run at around 70 - 85 degrees, the aircon must need a recharge as it doesn't really get that cold either..

Any ideas on the above please?

Many thanks

Darrin
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Old 10-10-18, 06:26 PM   #2
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Is it a 1.6 hdi ??
Could be heater flaps
Mine runs cool as well

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Old 10-10-18, 06:40 PM   #3
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No it's the 2.0 diesel, my bad

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Old 10-10-18, 06:49 PM   #4
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Are the fumes there all the time or intermittent

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Old 10-10-18, 06:56 PM   #5
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They tend to come in at junctions etc when stationary

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Old 10-10-18, 07:00 PM   #6
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Unusual,Flexi leaking maybe ??

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Old 10-10-18, 07:05 PM   #7
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I experienced similar in an Iveco van once where the hose before the EGR was split, is this the same do you think?

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Old 11-10-18, 07:14 AM   #8
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I had the fume issue on a 405 years ago. It was a leaking injector seal. The fumes got really bad when stopping at a junction. Didn't notice it much when motoring.
I think the exhaust fumes had been forced out of the engine through the leak then sucked in to the cabin by the heater fan.
It could also be oil dripping onto the exhaust manifold too so there's another thing to check.

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Old 11-10-18, 08:25 AM   #9
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Quote:
Originally Posted by grumpyoldgit View Post
I had the fume issue on a 405 years ago. It was a leaking injector seal. The fumes got really bad when stopping at a junction. Didn't notice it much when motoring.
I think the exhaust fumes had been forced out of the engine through the leak then sucked in to the cabin by the heater fan.
It could also be oil dripping onto the exhaust manifold too so there's another thing to check.

Grumpy
As I know very little about cars, would I be right in thinking then that if there's no smoke coming out of the rear of the car, then engine itself isn't burning oil internally to produce these fumes...

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Old 11-10-18, 08:41 AM   #10
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Hi Pasty,

no, what you're burning is a type of oil and what you are smelling is the exhaust gasses produced when diesel is being burnt in the cylinder, then escaping under pressure through a broken injector seal.
Regardless of weather you physically see smoke or not, the fumes (gases) are present in the exhaust.

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Last edited by grumpyoldgit; 11-10-18 at 08:54 AM.
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