Thrust issues with AFR gauge and Brawler carb
Few years ago I bought new Brawler 750 double pumper carb BR-67213. I was driving happily until this summer I got a wideband AFR gauge. I was supprised that according to the gauge it was running very rich at wot. Something around 10 afr. Stock jetting was 76 front and 80 back. I gradually decreased main jets size in front and back. Now im at 66 main jets in primary and 70 at secondary. Afr gauge still showing it is running rich at WOT. 11.6 afr. To me it sounds crazy that stock jetting could be so far off, could there be something else going on? Maybe the afr gauge isnt working properly? Has anyone experience about this carb in question?
Here is what my plugs looks like currently.
Carb
Few years ago I bought new Brawler 750 double pumper carb BR-67213. I was driving happily until this summer I got a wideband AFR gauge. I was supprised that according to the gauge it was running very rich at wot. Something around 10 afr. Stock jetting was 76 front and 80 back. I gradually decreased main jets size in front and back. Now im at 66 main jets in primary and 70 at secondary. Afr gauge still showing it is running rich at WOT. 11.6 afr. To me it sounds crazy that stock jetting could be so far off, could there be something else going on? Maybe the afr gauge isnt working properly? Has anyone experience about this carb in question?
Here is what my plugs looks like currently.
Carb