Sheen in exhaust water from Kohler generator

[Nater Potater]

So after my rant last night I cracked open a beer and started thinking (I do my best thinking over a beer), and while I was thinking I started shopping for a new coil. I discovered that even the OEM coil comes without the spark plug end attached to the wire. I then wondered if the existing coil/wire had an end that screwed on/off like the new one. So today I pulled the coil off the genny and was able to unscrew the spark plug end. I then screwed this into the new coil wire and reinstalled, and since this was a proper spark plug end it worked properly (still not sure what those boots were for that came with the coil). Anyways, I fired up the genny and after about 5 minutes the exhaust looked perfectly clean. So I am happy to say (fingers crossed) that my issue with a sheen in the exhaust has been resolved!!!

Thanks everyone for their input!!!

PS: I did do a spark test on the new coil and it seemed to clear the gap up until almost 30KV.

If you're seeing a sheen during a no-load condition, believe it or not, it could be that it needs an idle mixture adjustment. Now, I know that the engine's still running at speed, but, under no load, it's still running off of the idle circuit. Without knowing your exact setup, look for the idle mixture screw as seen here to the left of "B"

Bring it up to temp, remove the load, manually hold the throttle against the stop to drop the engine down to idle speed, and then adjust the mixture screw to get a smooth tick-over.