Posted: 8/3/2014 1:29:32 PM EDT
| Briggs and Stratton engine. Gigantic white smoke cloud on start up. Subsides fairly quickly. What problem do I have? Engine is 5 years old and maintained correctly. |
|
Quoted:
Are you tilting it, causing oil to run through the crankcase vent tube into the carburetor? Also, check your oil level. It may be high, letting it flow past the rings into the cylinder head when it sits idle. Given the supplied info, I'd say this as well. Also, if this is a riding mower with overhead valves, the valve cover gasket may be leaking. If the muffler is the big box kind below the head, it could be collecting oil on the outside. The blower would blow the smoke and it would seem to be coming from the muffler. Stick your head in the smoke and see if it smells like oil. |
|
Quoted:
Depending on how much use is on it the cylinder may be oval'd out ( if its a horizontal). This will cause oil to leak asking the piston as it sits. Or the walls or rings are bad. 
Oil will leak past the rings in a brand new engine. Negative crankcase pressure combined with cylinder pressure keeps the oil out of the combustion chamber. |
|
Quoted:
Oil will leak past the rings in a brand new engine. Negative crankcase pressure combined with cylinder pressure keeps the oil out of the combustion chamber. Quoted:
Quoted:
Depending on how much use is on it the cylinder may be oval'd out ( if its a horizontal). This will cause oil to leak asking the piston as it sits. Or the walls or rings are bad.
Oil will leak past the rings in a brand new engine. Negative crankcase pressure combined with cylinder pressure keeps the oil out of the combustion chamber. There's no negative pressure if its sitting 
|
|
Quoted:
There's no negative pressure if its sitting
Quoted:
Quoted:
Quoted:
Depending on how much use is on it the cylinder may be oval'd out ( if its a horizontal). This will cause oil to leak asking the piston as it sits. Or the walls or rings are bad.
Oil will leak past the rings in a brand new engine. Negative crankcase pressure combined with cylinder pressure keeps the oil out of the combustion chamber. There's no negative pressure if its sitting
Exactly. Oil will run past new rings just as fast as worn rings. |
|
Quoted:
crack a water jacket near the combustion chamber on an auto engine and that shits blows snow white......for awhile. Quoted:
Quoted:
Quoted:
Quoted:
White means water. Are your automatic lawn sprinklers douching down your mower?
Water smokes when you burn it?    crack a water jacket near the combustion chamber on an auto engine and that shits blows snow white......for awhile. It will steam, not smoke. |