Quote: Just out of curiosity, what size did you go to on the front HSABs? I'm also experiencing lean out at medium acceleration, AFR goes to around 16 before the PV kicks in. I'm considering going with smaller bleeds; just the opposite of where you're going. But won't know more 'till I replace the sinking float.
What rpm is 60-75rpm?
Fredrick, I think what you and Dave have been discussing is basically correct. And agreed you have to get the float fixed because that's effecting the pressure head and everything in the wells.
My only additional recommendation is to determine the HSAB based on the wide open throttle acceleration through the top of the RPM and load range. Your engine may be perfectly fine going to 16:1 AFR before the PV kicks in. It depends on the engine and the load. If you hold it at that point and it goes flat and loses power, then its too lean. In that case, adjust the main jets or open the power valve sooner.
Also take a look at your the spark plugs after doing that.
PS. As you may have seen on the Innovate forum, I found it useful to do testing with the secondaries disconnected.
