View Full Version : Kohler blowby with the oil cap off?

06-05-2005, 05:39 PM
Just changed the oil on the 23 hp Kohler. Started it up to let the oil circulate before I checked the level again. With the oil cap off I could feel blowby or air coming out of the valve cover. Is this normal for a Kohler? It runs great and I know some engines have pressure in the valve cover just checking to make sure this is normal for the Kohler Comand.

06-05-2005, 05:47 PM
If the thing was billowing smoke out, you might have a problem, But what you're describing is probably normal windage..

06-05-2005, 06:19 PM
I figured it was normal but wanted to make sure, Thanks!!!!! No smoke, runs like a charm.

06-05-2005, 06:59 PM
That windage is just the crankcase venting itself. If it didn't vent then pressure would build up in the crankase and eventually it will blow out a gasket or start leaking through one of the seals. As a side note as well, a little condensation is common as well. As long as no oil is seeping out then keep on keeping on!

06-05-2005, 11:22 PM
Thanks for the input guys!!!!!!!!!!

06-06-2005, 07:21 PM
Absolutely normal.