Paladin 300 possible dead fuel pump

[Thumper]

I was able to do a back flow carb cleaner rinse with the injector activated (open) with aligator clamps powering from the bike's battery. It went well. The on/off click is distinct and flow clearly opens up.

I did hear the fuel pump when I turned on the key, and it cycled out as it produced pressure. Seemed normal. Also, when cold, it started easily and ran OK briefly before it began to stall and misbehave.

There is a TPS and what appears to be a second sensor on the throttle body that is likely sensing some aspect of air flow (pressure?). And then there is the control module itself. I think the temperature sensor is on the cylinder, appears to be exposed to coolant. One of these things is not operating properly. I have a new fuel pump on the way, but that will take some time.

The fact that the torch spark plug was sooty tells me it might be too much fuel at idle, not air. And it blew some barely visible smoke when I was able to restart it after stalling (needed ~1/4 throttle or more). It was burning excess fuel! I did replace that plug with a new NGK plug. I am leaning towards a sensor or the control module as culprit now. The pump whines as it should, and the injector is opening and closing. MAYBE I cleared it up with the injector flush, but I am a bit skeptical that was even needed.

I need a tube of gasoline resistant RTV to mount the pump back on the tank and at that point I will test it.