hey guys, i just recently replaced the timing belt and water pump on my toyota celica 1996 st205 (5sfe engine) and now my car is overheating after roughly a 30-60 minute drive. the radiator seems to be overheating and boiling/forcing the reservoir tank out through the overflow hole. when refilling the coolant i had to use some water as the 5L bottle of 50/50 coolant i had wasn't enough. i cant see any leaks, i did see bubbles in the radiator with the cap off and engine running however i think that may be due to the reservoir tank being empty. i had never had this problem prior to the timing belt/water pump change. just wondering if anyone might have a diagnosis for this problem.