1988 Ford F-150 Smoke Coming from the tailpipe

The smoke is blue. It was not contant only when I first started the truck. There was a leak of about a teaspoon per day. I took it to a mechanic, and they did not hesitate to tell me that I needed a new motor. Since they told me that it was a major problem I did not drive it, now there is a major leak, they broke a sparkplug wire and there is constant smoke coming from the exhaust. They also told me that the spark plugs were covered in oil, which was majorly false! I am afraid to take it anywhere now :( What do you recomend I do?