Increase the flow rate using ingenium system - Kohler Toilet - One Piece with Ingenium Flushing System - San Raphael by

I assume this has an electric blower and probably electric fuel pump? Does it have a fuel filter somewhere in the system? I'd try to return the fuel pressure adj. screw to factory setting. I'm guessing screw in decreased flow rate and out increases flow rate. If fuel pressure is measured on the burner side, then increasing flow rate should increase pressure. It's intuitively backwards. What does customer service say? Usually, they are helpful. They need to know there's a customer problem.

The holes around the inside of the bowl may be clogged, try using some CRL and scrubbing the holes with a good stiff brush.

change ball valve as may have low pressure fill valve with in

WEll, two thoughts come to mind. either your float has "sunk" or you have foreign matter in the inlet valve...Typically, you replace the inlet valve in this case.

yes both, but you have a float adjustment issue

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check handle to ensure no tension is on the flapper chain when not being flushed. check flapper to ensure positive seal to flush valve. check water level to ensure not overflowing into flow valve. if that's the case, lower water height.

then if still doesn't work, change flapper,

all else fails, change flush valve.
good luck,
steve

My Kohler Ingenium has no pins. The white cap is attached to the grey lever which must be lifted up before twisting both one-eighth turn counter-clockwise, and lifting off of fill tube. Turn the water supply back on and flush the tube out (cover with cup first!). Use a thin wire rod about 12" long to gently poke down into fill tube to clear any clogs. Also check where the small flexible fill tube exits from the main fill tube. Reassemble and cross your fingers.