[RocktimusPryme]

Originally Posted by sdbob

I fool with Kohler single cylinder engines for Cub Cadets. I'm working on my first opposing twin Kohler 20 hpMagnum. Anyway guys on Cub forum said there is a small electric fuel pump,low psi that they say will work in place of vaccum pump. I had a single cylinder kohler that the exhaust hung open. The stem was coated with carbon build up. Local cub dealer John Labuda ,a Pontiac guy,said use Kohler oil so I have been for 3 yrs no problems.

Considering this all started with a dropped valve I suspected valve issues. But wouldn’t that show on a compression check if something was hanging open.