You are reading a single comment by @NurseHolliday and its replies.
Click here to read the full conversation.
-
What Nurse Holiday said, sounds like lack of fuel to me, but best to check / fuel / air / spark see if you can see any problems.
If it's any help the old Audi Pierburg carbs the float valve used to creep out of the carb housing so it eventually shut off too early leaving the fuel level low in the Carb bowl, that gave exactly your symptoms lack of power under load 2-3000rpm, easy to check pull the top off the carb and check the float height.
We used to tap them back in and peen the edge with a dot punch to keep it in place, may even be blocked jets in the carb
Fixedwheelnut
@NurseHolliday
In my opinion, sounds like a lack of air.
It's fuel, air, or spark. Try unplugging a fuel line to see if fuel is arriving at the carb. If it is air, it could be the filters are really dirty and clogged, or something is stuck behind the filter and under high load or throttle it causes enough of an obstruction to choke.