Can anyone help ? I have a 1992 Ducato Compass Calypso bought a year ago and have spent a lot of money sorting out its problems, new head gasket etc.It now runs fine does not overheat in fact the best its been except for white smoke coming from under the bonnet when the engine is hot.There is no loss of coolant or oil in fact the whole system has been overhauled by a local garage including new hoses and circlips.The smoke appears to be from somewhere around the air intake to the heater which was blocked with dirt and is now clear.Sorry for such a long post from a newbie but Im running out of ideas.

The only other thing that gives white smoke is diesel, do you have any leaks onto the exhaust or similar?

Its a 1991cc petrol engine. Have recently put in K seal we will see if it works!!!

If, as you say, there is no loss of coolant why have you put in K-Seal?