Dirty, you may still have some debris in there but then again you may not. By plunger I am going to assume it was what is commonly referred to as the metering needle. Its rubber tipped and has a triangular cross section. It's adjustment is critical to the carb performing correctly. If the activation lever for the needle has been bent even very little it could be your issue. The first thing I would do if I was you is remove the diaphragm cover and diaphragm and take a look at the lever. By using a razor blade as a straight edge against the carb body the lever on the opposite side of the fulcrum should be parallel to the carb body. If its farther down it will cause the metering needle to not allow fuel past, if it's up too far it will prevent the needle from sealing and you will get gas dripping from the carb. Too much spring tension will cause what you are experiencing too so check that the spring is fully seated in it's hole.