Re: Metering rod for Carter WDO 531 S
Posted by Fish'n Jim On 2021/5/23 9:18:05
I read this the other day and it struck me as odd, "leaning mixture increased CO" so I checked my thoughts.
CO comes from "rich" not "lean" mixtures?
CO comes from excess fuel that's not completely combusted due to lack of oxygen. About 14% excess air is required for good combustion.
So I don't know what going on here, but apparently, off the generally accepted track. So not likely to be resolved following this thinking and has transpired over a long period already.
Another brand I follow was looking for the metering rod calibration tool for these carbs, so might not be properly installed? I posted my motors manual section on this for the other guy so I include it here.
info on exhaust gas:https://www.crypton.co.za/Tto%20know/Emissions/exhaust%20emissions.html
Attach file:
37carb.pdf Size: 383.71 KB; Hits: 190
38carb.pdf Size: 312.09 KB; Hits: 105
CO comes from "rich" not "lean" mixtures?
CO comes from excess fuel that's not completely combusted due to lack of oxygen. About 14% excess air is required for good combustion.
So I don't know what going on here, but apparently, off the generally accepted track. So not likely to be resolved following this thinking and has transpired over a long period already.
Another brand I follow was looking for the metering rod calibration tool for these carbs, so might not be properly installed? I posted my motors manual section on this for the other guy so I include it here.
info on exhaust gas:https://www.crypton.co.za/Tto%20know/Emissions/exhaust%20emissions.html
Attach file:
37carb.pdf Size: 383.71 KB; Hits: 190 38carb.pdf Size: 312.09 KB; Hits: 105This Post was from: https://packardinfo.com/xoops/html/modules/newbb/viewtopic.php?post_id=233739