Kohler 27 hp won't run

Posted this over on the bobcat forum as well but was gonna post here as well to see it if could be an engine specific problem. Hi, I have a mower of a buddies that won't run. He said he was mowing with it and it cut off. Could turn it over and would kind o hit but smelled flooded so I pulled the plugs, cleaned them and reinstalled. Now it Wil crank and run for about 1 second and cut off. I put my spark tester on and it seems that both cylinders lose fire once it cranks. Any ideas on what that could be? I unplugged the oil pressure senso and that didn't help but I cant remember if I need to ground the wire for it to run correctly or not. It has the 27 hp kohler

If the oil level is too low, the mower will no start & some will stop, depending upon how the oil sensor is wired in, some won't start if it is disconnected.

REmove the blower housing and disconnect the 2 wires to the ignition coils.
Try to run the engine ( note you will need to ground out them to stop it ). spark tester still connected.
If it runs OK you have a problem with the mowers wiring.
If it does the same you have a problem with the coils