Engine runs at 3500 RPM.

[99yam40]

when you turn the key to the on position, the ECU sees what the Atmospheric pressure is before you even start the motor and that hold true until you turn the key /motor off.
does that match what your weather station says it is in your area at that time?
if not there is a problem with that sensor.

[99yam40]

still have the shift position problem,
but the voltage came up to 13V
I would think it would be higher

TPS reading only 1.05 V might be a problem at 3500rpm
also throttle valve only at 8.7 degree at 3500
not sure if 40 BTDC is in spec either
someone with more knowledge of you motor will have to chime in

I got to thinking maybe I am thinking about the TPS voltage and throttle backwards and they represent an open throttle
Someone else needs to help to make sure I am not looking at it wrong

[NeverSea]

I want to solve the problem. In the past, I lost a lot of money for technicians. But still have the same issues
help me please

[NeverSea]

Update https://youtu.be/BzHNqCe0dZc
Will it be this point? I try to take off the cup To replacement the filter But not removable Do you have any tips I don't have a specific machine