My neighbor just picked up a Yamaha Bruin 250 4X4 utility quad. It is a 2006 model. It is a one time owner and the original owner was a female. She took real good care of it and it was garaged kept. When my neighbor purchased it a few days ago, he came by and let me check it out. Everything looks great on it. He told me that it set up for 2 years. Upon opening the air filter intake (which was completely locked) we discovered it full of dog food. Has anyone every seen that before?! The next day he took it out for a spin and it died on him three different times. The battery is completely dead, so he had to pull start it. He told me that while he was riding, it started to produce white smoke then sputter and die. He checked the oil, and discovered that it was completely empty. He filled it took the full mark, but it would not crank at all. We pushed it back to his place and he tried charging the battery. Unsuccessful on that, we then jumped started it. It would not crank. There is proper spark, and the fuel switch is on. After several minutes, it finally started, but he had to have it a full chock and hold down the throttle to keep it running. The engine was making a ticking noise, like there was no oil to lube the lifters. If he released the throttle, then the engine would completely die out completely. He only did this for a minute or so. My question is, since it was so low on oil and now it seems like the crank case has minimum oil even though the dip stick show full, where do we go from here to keep this thing running? Or what is your diagnose?