Hi Mum of 4. Thanks for the offer, but since posting this I've found what I was looking for in the aux heater thread. Ours is smoking (grey smoke) until the engine has warmed up. Having just put it to the local Ford dealer, they told us "It's working fine, and there is nothing you can do about the smoke". Can't say as I was overly impressed with that answer, but now that I've read the thread I can see that probably a new glow plug is the likely remedy. Unfortunately, my lack of mobility make working under a car tricky, so I guess I'll live with it and if it gets too bad, take the fuse out! At least I now know why it sounds like a jet engine :o Sense of humour is fine by the way. Cheers, IanBo :D