When I got my 91 camry the radiator had a crack in it and the water I had in it would need to be refilled every month or so. ( I had no coolant at the time) About a week ago I was goin to a friends house and it started to overheat really badly. His house was only about 5-10 min farther so I kept on going. (bad idea I know). When I left his house I refilled it with some water and noticed the crack was huge in the radiator so i towed it to my house and replaced the radiator. The temperature stays midway now and is fine but I noticed a big loss in power after the car warms up (about 5 minutes after starting it up). When you arent accelerating it is fine but as you accelerate it is kinda studdery and bumpy. Theres no white smoke coming out the exaust and the oil looks pure. If anyone has any idea what could be wrong with it it would be helpful and any help would be much appreciated!