Mercury Mountaineer Spark Plug Replace/Remove

No Engine Light. I Changed The Coils And Spark Plugs. Then It Was Diving Weird And I Got New Ones. It Started Driving Really Good, Then...

Changed Spark Plugs And When I Checked Them Cause Enginge Wouldnt Turn Over And They Smelld Like Fuel?

What Should I Expect To Pay To Have My Spark Plugs Changed? Also Is This Something That Someone Could Do On There Own If They Have...

My Ac Is Hot And There Is Green Stuff Leaking Out In The Bottom Like In The Middle When I Looked Down Their It Look Like It Was Coming From...