Hello.
If it's in the wrong section, please move it.
I have a problem with the 2.0 AZJ 115HP engine. The problem is with the mixture being too rich at idle and low loads. Lamda corrections -20%
At medium loads it is better but still too rich -15% only at high loads the corrections are normal.
It has been replaced.
Lambda probe, flow meter, temperature sensor, intake gaskets, fuel pressure regulator, petrol filter, petrol pump, cleaned throttle, new air filter.
New fuel vapor valve.
Airtight inlet, smoke checked.
Vacuum at idle 0.29 bar
Nothing helped.
The engine has LPG but it has been turned off to exclude its influence. Still the same.
The battery was disconnected for the whole day and driving on petrol with turned LPG, then the same.
I have no idea what could be wrong but I heard that it's the fault of the maps in the engine ECU, that this driver has it?

Is the vacuum always idle at idle 0.29 bar?

I applied the vacuum on a hot engine. Yes, it always is.

So, totally disregard the post that makes sense and reply to the one that doesn't apply... That makes sense...

I heard that you can easily check if petrol injectors are not leaking. Turning off one gas injector in the program from LPG, if the corrections will crash on - it means that the petrol injection is pouring, right?
Because the intake manifold is terribly difficult to access these injectors.