Exactly the same here for 3 years. Starts on the button, always blue smoke, can sometimes be horrendous amounts. Instantly embarrassing. Engine doing the same as axxeman's; misfires quite a bit and feels jerky on gentle acceleration with noticeable clack, but once warm, purrs like the proverbial kitten. On similar mileage @ 133k. Reading Axxemans post a final time, and i have very similar symptoms! Thanks for the enlightenment there Graham, any chance you could elaborate a bit for us? This has been a proper bug bear of mine since i have had the van, but short of booking in with a diesel specialist and paying probably over the odds, i would love to get to the bottom of this! The van has a new set of glow plus, clean air filter, recent MAF sensor,recent engine block temperature sensor, recent oil and filter, recent fuel filter, AND had had a few bottles of good old Redex treatment, plus being run on expensive Diesel. I have tried to look for this topic, but not yet found such a good reflection of the problem i have. Cheers and kudos to Axxeman for posting this.