I am working my way through another issue with my newly acquired 74 Commando. I wrote about my carb set up (one 32mm Amal) in the topic,"Is one Amal Enough" on Oct 5.
I have experienced one pipe bluing so I did a plug check after running the bike. The left was a nice tan color and the right ( side with the blue pipe) was white with a white haze on the side electrode.
My first thought was a lean mixture. I richened the carb by raising the needle and screwing in the air/fuel screw to see if that made any difference. It didn't.
I switched plugs and the same result occurred. Left-tan, right-white.
I'm running a Boyer which, if I understand clearly, wouldn't cause one side to advance over the other.
I also checked the tightening of the carb and manifold for leaks. I can't reason a lean one side from one carb, but I'm new to these bikes.
Thanks in advance for any help.
I have experienced one pipe bluing so I did a plug check after running the bike. The left was a nice tan color and the right ( side with the blue pipe) was white with a white haze on the side electrode.
My first thought was a lean mixture. I richened the carb by raising the needle and screwing in the air/fuel screw to see if that made any difference. It didn't.
I switched plugs and the same result occurred. Left-tan, right-white.
I'm running a Boyer which, if I understand clearly, wouldn't cause one side to advance over the other.
I also checked the tightening of the carb and manifold for leaks. I can't reason a lean one side from one carb, but I'm new to these bikes.
Thanks in advance for any help.