Carbs lean out when hot. EFI is the opposite. That's why you always used to see carbed big singles refusing to start after a hot stall. Something tells me if you pull the plugs after one of these no-start incidents, they will be pretty white.
Raw fuel can actually boil in the intakes when the engine's hot. Might be the noise you're hearing.
If it's anything like a ZZR 1200, and i suspect it is, fresh o-rings that seal the jet bodies to the float bowls are critical.
It may be a pig, but it's a pig with a rocket in it's ass!
Last edited by Hammerhead; 07-10-2019 at 05:15 PM.