I see that many Commandos have some blueing on the headers, and then again, some have none at all. My headers have significant bluing at the first curve, and I don't know if this is an indication of a mixture too rich, or too lean. I checked my engine timing with a strobe and digital tach, and it is spot on 31 deg at 5000 rpm, as per spec on the installed Boyer MK 111 analog. My sparkplugs are usually dark colored, but have never fouled on me...I am using NGK BP7ES
plugs.
Any ideas?
plugs.
Any ideas?