manual shows .25v at closed throttle. Adjust TPS. I have an FSM .pdf for a carb 87 mitsu. Want a copy?

I suspect either a bad feedback solenoid valve (meters about half the fuel thru the main jet well to control mixture via ecu), or bad fuel cut solenoid valve.

I can't find any error code generation in a carb ecu - you have to use a checker or vom to check harness connector voltages.

Is there 3 wires on the coil - terminal? One to igniter in the dizzy, one to the tach, and one tach signal to ecu. If the last one is missing, the ecu gets no rpm signal.

If you plug the canister to carb hose, does the idle improve? Bad bowl vent valve, not in rebuild kits.