'84 VT500 10350 miles
Starts with choke on first crank, holds idle fine.
l have given it mild experimentation but even with choke adjustment, l cannot give it throttle until it's warmed up.
Once warmed up and riding:
Cuts, spits and pops below 3K. Above three thousand, it's OK. Some popping but ridable.
No slow idling along in traffic or mild pull away from a stop. Below 3K it just falls on its face.
Seller told me he was advised that the factory jets are lean and it needs bigger jets. I am disinclined to jump in that direction. It's my opinion that with stock intake and exhaust, the standard jets should be fine.
He said he had the carbs off, so I wonder if he got them well seated when reinstalling.
There may be clogged ports in the carbs- couldn't that create a runnability issue? (No other issues with throttle response or starting)