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Fumes coming from filler cap

PeteL
in Jaguar XF Club

Featured Replies

Has anyone else noticed this. Just recently I’ve noticed blue(ish) coloured fumes coming out of the diesel filler cap when I go to fill up. I wouldn’t think that there is a problem but I’ve had diesels for the last 15 years and never noticed it until I bought my XF. Any comments greatly appreciated.


  • Author

Update, it only happens when I’m putting diesel into the tank 

  • 2 weeks later...

Mine does this too although only picked the car up yesterday so can’t say if it’s repeatable issue...

  • Author

Thanks Loofah, good to know it maybe something that’s acceptable 

Just wondering - was your tank nearly empty on refilling (mine was)? Could just be excess vapour


  • Author

Hi Loofah, I’ve had it on a few occasions with varying amounts of fuel in

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https://www.jaguarownersclub.com/forums/topic/18015-fumes-coming-from-filler-cap/
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