o-300

Howdy Folks! I have found several threads on here throughout the years about the O-300, but not where all these answers are lumped together. I know very little about them having little experience running or working on them. So tell me what you know! Do you love it or hate it? What are the common...

I noticed some blue stain on the inside of my lower cowl, directly below my carburetor and decided I might have been to blame - attributing it to poor engine start procedure. My mechanic found otherwise after decowling today for annual. The hose connecting the intake to the cylinder appears to...