I have a Kohler Confidant 5 LP unit that was running great. Now nothing. It cranks great but will not start. It has spark and the fuel sol. is working, but can not tell if it's getting fuel. Can smell it but can't tell if it's getting into the carb. It does have compression too. Any thoughts would be helpful

SOURCE: 15 HP OHV Kohler engine with no compression

Have you checked for a bad head gasket?

Check the intake valve springs or the intake valve shafts to be sure they aren't stuck open. Another cause could be excessive carbon build up on the intake valve causing them to not seal.

If you've gone this far, you could try a compression leak down test. If you still have the push rods out, you can use or get an adapter that will allow you to pressurize the cylinder(s) with air by removing the spark plug. Apply 70-80 psi air directly to the cylinder (the cylinder may go to BDC (bottom dead center) but if you don't have any push rods, the valves can't open.

Listen carefully - if you hear air leaking out of the carb, it's a bad intake valve. If you hear air from the exhaust, it's an exhaust valve. If you hear air from the crankcase breather, it's piston rings.

SOURCE: My Kohler Confidant IV generator starts and runs

Kohler generators feed the generated voltage back into the control circuit board to tell it to keep the fuel pump (electric) runing and the ignition on. IF there is no voltage generated (bad brushes or?) then the symptom you describe will occur. The motor runs fine, but it isn't generating electricity.
Jim Russell

SOURCE: kohler confidant 4 generator service manual and wiring diagram

First thing is to check oil level as low oil pressure will shut it down.