I have a crankshaft pulley that's a little bit loose and the hole in it is oblong so it will turn a little bit. I was going to put a new pulley on and I got a drift pin and started to hammer on it to drive the pin out but it won't budge. I'm afraid to hit it too hard and break or bend the crank. Has anyone else had this problem?
Yes, recently. Are you sure you are hitting the end that had the cotter pin? I also had to go under the car and check alignment with the exit hole.