soot

Hi everyone. Looking for some advice on how to cure a black soot problem from the exhaust of my Yanmar 1610. I've owned this tractor for 8 years and it's always blown the black liquid from the exhaust but seems it's time to try and resolve the issue. The bonnet is covered black. Any advice...

Hi, our Massey 4609 loses about a litre of oil while running the hammer mill. We would not know where it goes, but when we work it a bit harder it blows it all out of the smokestack - soot all over! Checked the turbo -leaky seal could cause this- seems to work fine. Dealer thinks a leaky valve...