Smoke from breather

LLK · May 12, 2005

I have a 1969 Cub Cadet 125 that has started to smoke from the breather, especially when hot and under a load.

What is the cause and the fix for this?

pkk220@charter.net

Bob_Bainbridge · May 12, 2005

</font><font color="blue" class="small">( I have a 1969 Cub Cadet 125 that has started to smoke from the breather, especially when hot and under a load.

What is the cause and the fix for this?

pkk220@charter.net )</font>

It might be due to crankcase pressure caused by compression blow-by past the piston rings.. It might need a cylinder hone/bore and new rings.

Bob B.

DmansPadge · May 13, 2005

I agree with Bob! /forums/images/graemlins/smile.gif

JimR · May 13, 2005

Have you changed the oil lately?

JTKub · May 13, 2005

What engine? Kohler "K" series? Like Bob says, given the age, you probably are ready for a rebuild. You could check compression to verify. The only other thing I could think of, is a stuck reed valve or blown out baffle pad in the breather box? I dont know what you have, but that could cause more oil vapor than normal to escape from the breather.
G/luck
Joel