light shake in peugeot 307 idle

2002 model peugeot 307 xr petrol + lpg

the vehicle does not notice gas or lpg at idling, there is a slight flickering, idling around 7500-8000
but there are no strokes in the tachometer, I can feel the shaking in the vehicle idle adjustment
Would it be useful to raise a little from where, I'm waiting for your feedback guys

You cannot adjust idling. Butterfly cleaning and replacement of the idler probe may be beneficial. If the vehicle's heating changes the idling, there is one temperature sensor on the butterfly and it is necessary to check it.