After months of working on my motor out of the the car to rebuild it from the ground up, I finally got to start it and hear it run. However, moments after the motor was running a sizable leak developed in the front of the motor which appears to be coming from the oil pump itself. My question is can I remove the oil pump without having to pull the motor (again) or is there some other way? I searched this subject but I didn't find anything too insightful.