Tuesday, November 22, 2011

My craftsman tractor with a kohler 15 hp motor billows what appears to be white smoke when i first start it?

it an older lawn tractor model 917256552.........once its warmed up it runs good., no more smoke


not sure if its oil or raw gas seeping into the cylinder.....puzzled|||I think that it is oil. A rich fuel mixture usually causes black smoke that smells stronly of gas. Most likely the cause of the oil burning is the valve guides. A small amount of oil can leak past the guides and into the cylinder. If that is the only issue with the engine it will probably last a long time yet. Check the oil level in the crankcase and keep it near the full mark, never over and you should be good to go. I had a honda motor on a push mower that did that for years. Never used much oil but always had white/gray smoke on start up. Just kept running and didn't bother a thing.|||More than likely it is gas. Sounds like you are using to much gas on startup. It being an older model you may be able to adjust the carborator and should take care of this problem. Also if it has an adjustable choke you make be able to adjust that just for startup. Either way should take care of your problem.|||Possible that the engine is due for a rebuilding..............if not done so already, be sure to change the oil ( and filter if equipped ) every season, check/replace the spark plug(s), and adding Marvel Mystery Oil to the oil %26amp; fuel will help extend the life - that goes for any vehicle with en engine|||Could have too much oil in crank case and sucks it in around piston rings while cranking.


Smokes because its mixed with gas and being burned under compression.





If this motor has a dip stick, check to see if it is the correct one.|||Worn valve stems %26amp; seals; oil in the head runs past the seal into the combustion chamber when shut down; after running, it heats up, expands and closes the gap.|||Bob is right white smoke = to much gas


from a old timer

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