Chosen Solution
My Honda engine on a Toro motor suddenly started billowing white oily smelling smoke out of the muffler. I shut it down, and let it sit for a while. it starts on the first pull, runs fine for about 20 minutes and then starts billowing out white smoke again. Head Gasket?
I have a brand new Toro doing the same thing. Runs great then all the sudden it just billows white and blue smoke. Run it for a bit and it comes out of it. Mowed four days ago, no smoke, mowed today got about half way done and poof I filled the neighborhood with smoke.
