What was up with this Jaguar?

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Tue 2 Oct 2007 22:17
What was up with this Jaguar? - Brian Tryzers
On the M40 this morning, I was passed by a newish XJ - 54, I think - that seemed to be trailing a little silvery cloud that wasn't spray rising from the wheels. As it disappeared, I noticed it was also leaving behind a strong whiff of diesel fuel. Anyone like to suggest what might have caused this - and what risk it might have posed to the Jaguar driver and the rest of us?
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Tue 2 Oct 2007 23:32
What was up with this Jaguar? - pd
Particulate filter cleaning its self? Several modern diesels, especially BMW's, put out clouds of white smoke (looks like a blown turbo) do this regularly.
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Wed 3 Oct 2007 13:59
What was up with this Jaguar? - Brian Tryzers
Interesting, PD. Would you expect that smoke to smell of diesel?
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Wed 3 Oct 2007 15:53
What was up with this Jaguar? - paulb {P}
I should say that if it wasn't tyre spray, but looked wet and smelt of diesel, it may have been a fuel leak of some sort.

If so, then in answer to your question:

Risk to Jag driver - running out of fuel a lot sooner than he thinks.
Risk to any motorcyclist following him - substantial. I don't think I'd have been too happy.
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Wed 3 Oct 2007 21:58
What was up with this Jaguar? - Bromptonaut
Overfilled and leaking off via breather or similar?
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Wed 3 Oct 2007 22:00
What was up with this Jaguar? - Bromptonaut
Or maybe split fuel return pipe.
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