Please explain like im a 5 year old, I have a 1992 Hijet S80LP with the 550cc engine. I bought it at a Government auction years ago and everything was fine. It has 14100 real miles. I will show pictures of engine with valve cover off. It is clean to me. Its making the burping noises and loosing coolant, boiling. What would cause this? It seems odd it would blow with so little use. Could it be anything else?