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Discussion Starter · #1 ·
Hi,

I was wanting to share my current issue to see if anyone has encountered anything similar that may be able to provide some advice please.

I have a 2011 post facelift Jaguar XFS 3 litre diesel. And noticed a couple of weeks ago a strong fuel smell in the cabin. I took it to Jaguar specialist who told me I needed a new catalytic converter. I got a second opinion and it was suggested that the DPF was blocked which was causing the smell. So I decided to have my DPF filter removed and cleaned and it was confirmed that it did need cleaning.
The smell in the cabin is now not as strong as it was before the DPF clean..but it still appears to exist.

I plan on getting this looked at again, but would welcome any suggestions. Thank you.
 

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Isn't there an exhaust flexi pipe on this engine that's known to split?

I wouldn't have thought the pollen filter will cause this kind of smell. They can sometimes get a musty mouldy smell if they get damp/bacteria ridden but not a fuel smell.
 

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Exhaust fumes smell differently to raw fuel - which do you have? If the latter, take out the rear seat bench and have a look at the sealing of the fuel pump/filter assembly into the tank, which you will see in the "floor" under the seat.
 

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Discussion Starter · #5 ·
Exhaust fumes smell differently to raw fuel - which do you have? If the latter, take out the rear seat bench and have a look at the sealing of the fuel pump/filter assembly into the tank, which you will see in the "floor" under the seat.
It is exhaust fumes I can smell
 

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Then check the flexi couplings from the downpipes. Known issue.
 

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Thanks. Will get that looked at
Also you have to consider the Evap purge valve. The cats would smell like rotten eggs and when they break down you can get weird rattles in them almost like a bad bearing. I assume you had no P420 or P430 codes to indicate efficiency loss of the cats.

TBB in Dallas
 

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On a diesel?
 

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I now have the same problem. When engine cold I get fumes in the cabin only for a short time, I thought at first it was when the car rear was up against the garage door or when the wind was blowing from the rear of the car.
Had it up on my 2 post today, pressurized the exhaust with my vac on blow, went round with water/soap spray,everything looks good. The cross pipe looks good from what I can see, but it is covered with ali foil and a sod to get at. I can smell the fumes from under the bonnet when first started, This is going to be a real pain to sort out, to rule out the cross pipe I will have a big job to get it off to prove it is a problem, no sign of any leek I can see. Will keep you posted of any further advances.
 

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Discussion Starter · #12 ·
Then check the flexi couplings from the downpipes. Known issue.
Thanks, will get this looked out.

I noticed that similar to a previous post on this thread that the smell was strong when the car is stationary. When driving I changed the air heater from low down setting to face setting (if that makes sense). This seemed to significantly reduce the smell in the cabin. So yesterday I replaced the pollen filter and then did an air conditioning clean (product purchased from Halfords). I will see if that makes any difference.

Btw, I have noticed that there is a bit of rattling sound towards the back of the car. But haven't had this checked.

Appreciate the advice, thank you.
 

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Discussion Starter · #13 ·
I now have the same problem. When engine cold I get fumes in the cabin only for a short time, I thought at first it was when the car rear was up against the garage door or when the wind was blowing from the rear of the car.
Had it up on my 2 post today, pressurized the exhaust with my vac on blow, went round with water/soap spray,everything looks good. The cross pipe looks good from what I can see, but it is covered with ali foil and a sod to get at. I can smell the fumes from under the bonnet when first started, This is going to be a real pain to sort out, to rule out the cross pipe I will have a big job to get it off to prove it is a problem, no sign of any leek I can see. Will keep you posted of any further advances.
I can also smell fumes from under the bonnet. But would presume that it would smell strong there anyway. Only started smelling that area since I could smell th fumes in the cabin. So have no real point of reference as to what it should smell like.
 

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I can also smell fumes from under the bonnet. But would presume that it would smell strong there anyway. Only started smelling that area since I could smell th fumes in the cabin. So have no real point of reference as to what it should smell like.
Have a look at the PDF Fred has just kindly posted here: This is how rebuilding a 3.0D will be…

An issue that has been heard of several times over the years.
 
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