I was driving my car to work today when i noticed that my engine would make a very loud knocking sound when i was starting it as the day went on i was on my way home from work when my engine started knocking very bad however the oil pressure was stable at 45 psi vac was normal and stable, idle was stable at 700 in gear, no excessive smoke was coming out of the valve cover breather or out of the tail pipe, it go's away on acceleration but as soon as it hits idle it starts knocking again very very loudly, it sounds like its coming from the fuel pump area, it sounds like as if there was a mar ball in one of the cylinders. i will be removing the spark plugs to make sure i just didn't detonate one of them. im trying to upload a video but it is taking forever to load.