Originally Posted by 97firebird
The motor runs perfectly fine with no oil dripping. It only starts to drip out of the valve covers when the motor is under load for a little while. I can't see what could plug the breather system really...Its is only an umbrella valve and a hose. However, I have been hearing a lot about a breather problem..but I think the replacement you are referring to is for the newer model Kohlers. Thanks for the input though.
If you refer back to the service bulletin I posted in one of your other threads about the installation of the breather assembly they gave the part number for a new reed style breather assembly to take the place of the old umbrella type
because there was a problem with them.
BTW; Did you get the cylinder leak-down test performed ?