Went lean...

I FOUND THE PROBLEM! And, pictures.

I went in this morning to re-jet based on my new found problem. And during the course of doing this I told myself I'm going to put that air cleaner assembly on piece-by-piece very carefully.

I have a habit of removing the wingnut and lifting the whole air cleaner assembly off in 1 piece, and then pulling the breather hose off and setting that aside. Which I did again this morning. But I decided I was putting it together piece-by-piece. After changing the primary main jets, I sat the whole assembly back on and realized, this is not piece-by-piece. So I pulled the top and filter off and this is what I observed.

Breather Vent Blockage 2.jpg

Breather Vent Blockage 1.jpg

I think I indicated in my first post I noticed this breather vent was out of position. But I was talking with my new friend at that time. I did straighten it up replacing it. But I didn't notice just exactly where this breather vent was when I pulled it off. When I pull that whole assembly off, with the top on, and handle the breather hose, I've been rotating it out of position, and didn't know it. So, now I know.

The AFR gauge pointed out the difference IMMEDIATELY. I trusted it, I just didn't know why the AFR changed immediately at that event and it made me a bit nervous. Now I know. And now with my new found undisturbed air flow, I get "MO POWER BABY." (Say that like the guy on youtube.)

This also answers why my choke never seemed to work like it had before. I was basically choking it to some level 100% of the time.

The retune begins. Based on my nerd spreadsheet, what I observed with the AFR when it went lean after "the event," and my re-jetting this morning, the "cruise" mode and "power" mode are already spot on. Now I will confirm the WOT next chance I get, do the math, refer to my nerd spreadsheet and re-jet the secondary main accordingly.

Thanks for helping me out guys!


7milesout