Reply to thread

This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.

Message: <blockquote data-quote="aussiegold" data-source="post: 139698" data-attributes="member: 3832">yes, i understand that the jetting is controlled by the carbs and and the ignition certainly is burning every bit of fuel that is getting there.the colour of the plugs bears this out, along with visual proof via the Colortune. a few words on the Colortune. so far , it has been very useful to actually see what is going on with the combustion. it is not as accurate as proper exhaust gas metering , but useful just the same. it is simply a visual aid .in theory, with a stock engine and stock carbs with standard jetting , this engine should be running smoothly through all rev ranges.    even with the standard idle circuits running on the lean side. i think you are right , the next logical step is to locate some one who can test the exhaust gases, with the proper gear, to see where it is lean. (or rich ). how accurate would that be with the stock Horseshoe muffler ? can't get a probe in each head pipe .i am not happy with having to put washers under the needles, or even consider re jetting. it just doesnt make sense.  :BigGrin:   not being able to pinpoint what is going on with this engine is infuriating. but i will find it.  :roll:</blockquote>