AndreyB wrote: ↑
Fri Oct 09, 2020 5:57 pm
Oh, looks like this all goes from idle control oscillation.
Turn off every you can turn off....idle control, closed loop, CLT you probably need to get it started and warm but that is the only correction I ever use on a fresh setup and make sure the correction is 0 before you start trying to tune anything...you need to know what you're changing is actually what is controlling the results you are looking at.
Get no load steady state right through the rpm band, idle to redline. Then light load, then heavy load. Once that is done its time to play with corrections and other fancier things or you end up running in circles for ....well I've honestly seen people circling for years. Once the no load VE is set you can work on the startup stuff to make getting back to work on a new day easier...but everything else off.
If you are not trusting the O2 reading, plug a plug and google "plug read". The plugs never lie. just listening to the sound will also tell you a lot....steady throttle should be steady rpm....too lean and it will "hunt", too rich and you'll see smoke and/or black plugs. First pass through is just make it run through the rpm band. Then it is time to install the O2 sensors as they are easy to kill......not that I always follow my own advice which is why I just replaced my O2 sensors