Originally Posted by
bluntys1rsturbo
I think you may of misunderstood me.
Its not the mixture screw its on the same side of carb big brass screw head that you use a large flat head to take out
In there it holds the idle valve and on that should be a rubber o ring I would place a bet on its either worn or completely gone.
After reading EVERYTHING regarding jetting, I've done the following:
-Replaced the main jet from 125 to 117.5
-Replaced idle jet from std 45 to 42 and also the o ring from the screw which was partially worn
-Replaced air corrector jet from 125 to 100
...and guess what?
My issue running always very rich with no load (boost) is at last solved!
After letting it warm up, I've adjusted the mixture and the engine runs at AFR 14.7 at idle and 14.5 at 2500 RPM !!!!!
Now I can focus on adjusting fueling on boost with my extra injector driven by Megasquirt...
Thank you so much all you guys for the excellent advice and guiding
