hi all have recently aquired st183 4ws with 3s fe engine.i am having a few problems getting spares any information on parts dealers would be appreciated also can somebody tell me where the coolent drain plug is on the block,is it at the front down by the exhaust manifold.i have a problem with the cooling system loosing water out of the exspansion tank overflow when the car is parked up after being driven engine is not overheating and is running normaly.when i go to check the rad when its cool there is pressure in the system eg the two hoses from the rad are flat when rad cap is released they go back to normal thanks ade

Where in the world are you ??????    Lots of people have moved to the International-Celica Group.    When it comes to bleeding the water system.  The best bet is to run the car from cold with Rad cap off run it till the fans kick in you should see all the bubbles escape !   Then re-fit rad cap (with engine still running).  make sure the expansion bottle has enough coolant in it and stop the car..  all should be well !  

Chipster [ICOC]
ST183 4-WS (Auto) 1991

check the pressure cap, sounds like the water is being forced into the over flow but not able to return, water in a pressurised system will boil on contact with air i.e. when it hits the overflow bottle.