Firstly (before anyone points any fingers

) I managed to get the garage to tax the 406 for me. I also got 7 days free insurance with Norwich Union (even if I did have to spend 30 mins on the phone telling them my life history!) - so I'm mobile!!
Anyhow, back on topic. It has an issue - (for which I managed to negotiate a very significant discount!) - but hopefully nothing serious.
When I fired it up at the garage, it had been stood for days. It was mis-firing, idling erratically, and smoking lots (diesel smoke, not oil burning smoke).
Once it had a blast around the block, it was absolutely fine, idled sweet as a peach and no visible smoke at all.
This morning, after being driven yesterday, it started much better, still smoked (grey) too much for my liking. There was a very slight miss for a short while, and erratic idle, but it cleared a lot quicker today.
Thought I would start poking around under the bonnet - and as Mark always says - fix the obvious issues first!
So -
1) first thing I found was a diesel leak. The leakoff pipe on injector number three was clearly leaking and it was collecting up top. There was plenty of length on the pipe, so I just cut the end off and re-seated - much better.
2) Replaced dirty air filter
3) Filled the fuel filter housing with diesel fuel treatment, ran the engine, so it had a really high concentration of it. Did this twice.
4) Replaced fuel filter
Not sure what else to do really - apart from:
5) Italian tune up (!)
I can't think it's injection timing, as it clears when warm and will pull like a train with no smoke all day. Although, the cambelt kit will be done soon anyhow, so it will be checked.
Any ideas most welcome
