Im new to the BMW worldf to please dont roast me haha. I drive a 1999 bmw 528i with 309k miles. It has a misfire in cylinder 5. (just some more details about the car idk if that means anything.) Ive been driving my car for about 2 weeks and ive noticed that when Im driving that my coolant temp would go to the red for about 15-30 seconds then go back to normal. I also have the fan behind the gill doesnt work. I went to put coolant into the resivoir and when I did i noticed that there was some coolant leaking so I took off the plastic cover under the car and I noticed that when i went to add water to the coolant that it started to leak really fast and it looks to be behind the water pump. I know the gasket is fine cause nothing leaks from there and its showing no symptoms of a leaky gasket. Any help would be great!