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All righty then. I'll be rebuilding the carb first and then the fuel pump if it's not the carb. Two relatively inexpensive fixes. Thanks!

Thanks for your response. I'm concerned about the increased blow by? Could too much fuel actually stop the rings from working and be letting fuel and compression pass the piston? Let me also clarify something..... the oil has fuel in it..... but the oil level was actually on the low end...

Hi All, this is my first thread. I have a 27 hp Kohler cv740. It runs rough and blows some blue smoke at start but then small amount of black smoke.. Plugs are black as could be. There seems to be excessive amount of blow by come out the oil tube. It's getting spark. I checked the needle and...