Peter Snell wrote:

Clean the carb again. Get a carb kit. Disassemble it COMPLETELY,
clean it with real solvent, blow out all orfices with compressed air.
Reasssemble according to a parts diagram. Lots of carbs get reassembled
wrong.

And make sure that you don't/didn't use RTV
as a sealant on that carb.

I once drove a Datsun for 40 miles at 20mph
because I made that mistake.