Runs bad under a load

[masternites]

Hello all :waving:
I have a cub with a 22hp kohler and 60" deck. It ran and stoped ran and stoped so I redid the fuel lines from tank to pump. Fixed that. Now a tube under the air filter has a fuel and oil mix coming out and chocking down the motor while under a load mowing or a hard pull. Blows lots of smoke out the muffler fouls the plugs. Runs ok when not under a load.. Blow-by I'm guessing??:confused: What is the fix?? Please
Thanks John

[LongviewLandscapeSupply]

sounds like a blown head gasket... thats what our dingos are like when they blow the motors... kohler motors are junk.

[Restrorob]

What's your high speed RPM set at ?

Is the oil level over-full ?

Does the oil smell like fuel ?

What weight oil are you running ?