Any of your mowers have PCV systems/valves?

[SOHCman]

I imagine this could be a maintenance item just like for vehicles, but likely only on larger riding lawnmower engines. Anyone know they have one?

 

[Eddie]

Don't let California hear that or they will demand ALL mowers have exhaust gas recalculation. Ed

 

[jhellwig]

Every single briggs and Stratton down to the little ones for a very long time has had a pcv valve. On the flatheads it was always built into the tappet cover.

 

[SOHCman]

Originally Posted By: Eddie
Don't let California hear that or they will demand ALL mowers have exhaust gas recalculation. Ed


lol, and particulate filter while were at it

 

[SOHCman]

Never know the brigs had em. Makes me think all do, just not as obvious as an auto

 

[jhellwig]

The Briggs was a reed valve with a tube that went up into the carb intake. The onan in my 318 just has a breather.

 

[DallasTexas]

I have a Honda engine, need to see if I have one. Great engine though.

 

[Linctex]

Most small engines use a check valve of some some on the crankcase breather system to try to keep the crankcase under a slight vacuum. Piston motion in conjunction with the breather/check valve keep this in operation.

This helps a LOT with reducing oil consumption