- Joined
- Jun 11, 2026
- Messages
- 1
- Reaction score
- 0
Just wondering if anyone has any ideas i have a 2009 Impreza STI 330s and a few months ago i broke my radiator while replacing the exhaust because i knelt on it and snapped the pipe without realising, anyway ive replaced the radiator with a Mishimoto radiator that was a OEM fit, then replaced the top and coolant pipe same brand because they split when i ran the car bled the system ran great for a few days then it started to over heat, next i replaced the thermostat that i got from DnA same story bled the system, ran perfect started to over heat out of no where, yesterday i put a coolant pressure tester on the system pumped it up to 10PSI any higher it would piss coolant into the overflow tank, left it overnight and found it was bone dry but the pressure had dropped has anyone got any ideas what could be wrong with it running out of ideas and patients if im honest thank you.