Hi. I have a 92 ez-go 4 cycle. I am having a problem. The cart is running. I recently bought it. I have changed the oil (1.5 qt. lifted), new spark plugs and wires, fuel and air filter, and cleaned the carb twice. It runs, but it blows alot of smoke from the breather line and it will not run with the air filter in the box. I don't know if the smoke is from the previous owner overfilling the oil. If anyone can help I would appreciate it. Thanks