I have a 2000 ranger with a 2.5 that I recently took the head off of to have some machine work done. After putting it back together, it runs perfectly, but after running for about 5 minutes, oil starts pouring out of the front of the motor. I thought it was the front crank seal, because after taking the timing cover off, there isn't any oil around the head or oil pump. After putting a new crank seal in it and reassembling, the same thing happened. Does anyone have an idea of what this could be?