White smoke on small Volvos are usually a sign of the cooling system beginning to clog up. This usually starts in the
exhaust bend.Water gets in, but not enough out to prevent it from vapourizing in the hot
exhaust hose. If your engine is raw-water cooled:dismantle the bend, clean and check and run a cleaner in the whole system. Take out the draicocks at the bottom of each cylinder and flush it from there with fresh water.If you have a two-circuit system, cleaning the heatexchanger and
exhaust bend is normally enough.DO NOT put waterpressure at your raw water
pump as this may dislocate the seals and fill your engine with water!