Installed new trollhole carb a few weeks ago but have been having trouble idling once warm and after long (~ 5mi highway drives when I’m come to a stop). Truck will idle down to an eventual stall and is then really difficult to start. Black smoke coming from the exhaust makes me think it’s getting too much fuel somehow. I have checked and corrected Valves, timing, and vacuum leaks checked for. Compression test done. New plugs and wires. Taken apart carb and cleaned out 2x with very little debris and none of the “shavings” others noted in prior posts. Throttle linkage returns fully. Started reading a few threads and have come to the conclusion it’s the idle control solenoid not functioning properly. Trollhole carb only has one wire from solenoid to plug and I ran it to power source. Took the other green wire from emission computer and grounded it. I get a “click” on occasion but no obvious change to the solenoid when it’s hardwired. Will NOT die when unplugged. What’s my next step or am I way off. Emailed and called Marshall now awaiting a reply. Any ideas?
