oil leaking from exhaust
i'm fixing my neighbors lawn mower for him, i thought it would be the usual; punky gas, bad plug, clogged filter or any combination of the 3. oops, my bad i pulled the cord once and it started leaking oil out of the exhaust. it's a murray mower with a real cheap-o briggs 4hp engine. has anybody ever heard of such a thing...does that even make sense? how does the oil get all the way through the exhaust? maybe he tipped it and it got in there once and this is just the long term results? please help, i owe this guy money:) sorry for no engine description, i'll update later, Thanks to everybody in advance.