Hey I don't know much about engines and stuff so I was hopeing you guys could tell me whats wrong with my uncles trike. it's a Honda 1983 185S. Last Spring it was running great but lately it won't start. So we checke dto spark plugs and they were covered in black gunk. We cleaned them and it would start but soon it would not start up again because more gunk was on the spark plugs. A guy my uncle knows said that it need new rings or something to stop the oil from leaking on the spark plug. IS this whats wrong with it? Thanks!