Hope somewhere can show some light to this problem. I firstly only purchased the car 2 weeks ago when it started about a week later to show some cooling problems, it was after a run of about an hour it started to overheat so i shut the engine down, let it cool and check the water - loss of water. At this point was thinking of the worst water seals. Anyway bled the coolant system using only water and started perfect but did the same again after about an hour run. I also found at this stage the car was hard to start when hot which got me even more worried. Also when i finally got it started after a hot start there would be a quite alot of white smoke which i know is a sign of bad water seals. So this time i flushed the sytem with some radiator flush and rinsed it out clean with water twice. Now starting the car it was perfect and would now cause no problems at all when hot with no smoke whatsoever, but would so a bit of smoke on starting it from cold. At this point i also noticed a small leak from the underside of the water pump.
Would the waterpump cause this problem? or do i have bad water seals? Would the excess smoke from a hot start be something else before i did the radiator flush using some radiator flush stuff?