406 Diesel Turbo ignition problems

Hi All, can anyone help with this?

I've just returned from a trip tp South of France (2000 mile round trip), and since I've got back I've noticed a problem with the glow plug light taking longer than usual to go out when I start up and takes a while to "catch", and the exhaust blows out a plume of black smoke on ignition. The glow plugs were replaced a couple of months ago and everything was going fine before the trip (although I did notice the black exhaust in France after the journey down). Has anyone got any idea what the problem might be?

Any help appreciated.

Thanks

Paul

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Paul M
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