Is the Carina prone to headgasket failure? As ive just had to rescue the missus as she (wisely!) stopped when the temp gauge went high. Theres no obvious leak anywhere, and the rad was full when we bought the car 3 weeks ago. My theory is that the headgasket is is leaking water into a chamber somewhere and needs topping up every few hundred miles. The water system doesnt seem to be getting pressurised, theres no white stuff on the dipstick or inside the filler cap, and the engine is really smoo