2007 DF 140

[STA79]

loosing engine oil from blow by hose that runs from the valve cover to the air box?? anyone know what causes this to happen??

 

[99yam40]

sounds like pressure leaking by pistons/rings causing excess crankcase pressure

 

[STA79]

thanks 99yam40

 

[STA79]

leak down test or compression test??

 

[99yam40]

leak down would be the way to go

 

[STA79]

thanks