"Its never the carburetor". That is my mantra which I depend on to force myself to look everywhere else for problems before monkeying with the carburetor. Do that.
Now having said that, in your case you have 2 carburetors. Twice the trouble theoretically. There are two quick and easy tests that you can try to see if it is a carburetor problem.
1) Pull a spark plug to look for black soot.
2) If the plug looks fine, as you approach the speed at which it blubbers, pull the choke knob out slowly to see if the blubbering goes away. If it does, one of the carburetors or both are running lean.
Last edited by 52Carl; 09/02/2022 2:03 AM.
