2002 Honda Accord problems

Long question.I have a 2002 Honda accord lx 4 cylinder. So, I was driving and I was just over my need for an oil change, then my check engine light came on and my oil light began blinking. I drove my car about a mile down the road and had my oil changed immediately. The car ran better and my check engine light eventually turned off. Not 20 minutes later, I was pulling in my driveway and my car shut off on me. Now when I try to start the car it may start, but the engine shakes and eventually dies. It will hesitate and die when I either put in into reverse or into drive. I also drained about a quart of oil from the car, added more gas, and that didn't resolve what I thought could be an issue. I also just noticed I have a black watery liquid coming from my exhaust when I turn the car on and it has stained my driveway. And thus far I have changed my cap and rotor, my ignition wires, and last year I had my battery replaced and put new spark plugs in. Any thoughts on potential problems? Oil pump? Fuel pump? Fuel injector?