I just bought a blaster that has an oil leak. The person i bought it from said that he ran premix and put oil in the small oil pan on the side with premix. I know these use an oil injection system but he said it was taken off. He was still putting oil in the motor as well as premix in the tank. It is leaking out the top hole where it would feed into the carb but it seems to be everywhere so its hard to pin point the place of the leak. Any help on this would be very helpful. Where is the oil pump and can putting in oil without a pump and premix cause a leak. Thanks