You most likely tipped it too far and got oil up inside the engine
parts. Change the oil filter for starters. Then run the heck out of
it under load. If this dont stop smoking after a few hours of
operation, you might have a stuck piston ring. That means to either
tear down the engine, live with the smoke, or sometimes it helps to
remove the spark plug, pour kerosene in the cylinder and let it sit
like that for a day or two. Then pour out the kerosene and pull the
string a few times. Then replace the spark plug and start it.
Sometimes that unsticks a stuck ring.

I should mention that one of my mowers started smoking this spring
after sitting all winter. It never did that before. I just changed
the oil and ran the heck out of it. I use this mower almost daily in
the summer. It took a few days to stop smoking. I know a ring was
stuck but it loosened up from use.

PS. I never tried this, but heard that adding a tablespoon of ATF
transmission fluid to the oil helps unstick rings.

They also sell some stuff called Marvel Mystery Oil that is supposed
to work too. That stuff gets added to the oil and the gas. I have
added it to my car a few times but not for smoking, just to clean out
an enine that sat for a long time. I was told that Marvel Mystery Oil
is about the same as transmission fluid ATF.

Mark


On Tue, 13 Jun 2006 21:49:01 GMT, "News Groups"
wrote:

I was given an old Craftsman riding mover. It needed new blades and not
knowing how to take the deck off I jacked up the front end as high as I
could. It sat overnight. The next morning I started it up and it started to
smoke a little(white smoke from the muffler) as soon as I put it in drive it
started smoking like it was on fire. I checked the plug, it was completely
fouled up, I checked the air filter compartment and there was a fair amount
of oil at the bottom. I changed both of them and started it again, still
smoked heavily. Turned it off and had to clean the plug to get it to start
again. I let it idle for over an hour, then put it on full throtle - still
smoked. Did I screw up the engine? I was thinking of trying a engine
addative and see if that thickens up the oil incase I busted a seal. I
could really use some help here. Its really not worth taking to a mechanic
for any type of major engine work.
Thanks
John