I have a 2009 61" Scag Turf Tiger, 27 hp Kawasaki engine with only 140 hrs on it. Today after a few hours cutting pretty long grass, it occasionally would blow large plumes of white smoke. I shut it down and checked all levels, all levels were fine. Started it back up and ran for awhile, noticed it would only blow the smoke when headed downhill and turning left. Any ideas? All I can think of is the right side hydro pump. Thanks.