2004 Harley Davidson XL 1200 C Sportster Custom "high emmisions" Questions

...emmisions, CO too high. Idle mixture screw seems ineffective. cleaned the plugs, turned the mixture screw in a complete turn and got the same numbers back on the second test. It does smell rich while ...

...high. when started, it will idle at 1500 and within a minute is idling between 2500 and 3000 rpm. the exhaust on my hand also smells a little rich. what is the problem and what is a solution? Hi, Do ...

...like the shims need adjusting. Get it on a dyno to check the hydro-carbon emmisions if they are too high the problem is some of the valve clearances are too tight. A re-shim will cure the ...

...high-temp silicone between header and TORs (make sure there are no exhaust leaks) 2. remove A.I. 3. remove carbs, clean and check jet sizes 4. reinstall carbs and balance them 5. play around with ...