Air fuel ratio

[bucketofguts]

Do news saws have a 02 sensor to do fuel air ratio? Can you measure the same with a 30 year old saw with a 02 sensor up its pipe? Thank you for your time.

b~

 

[huskihl]

No. Autotune and mtronic saws adjust the tune looking for an rpm change. And then adjust further based on the results

 

[redneckhillbilly]

I have seen spark plug crush washer temp sensors, I could see something like that aiding in tuning.

not sure how well an O2 sensor would hold up with the mix oil in the fuel.

I think an oldschool EGT gauge would probably be the best for tuning. all my saws are autotune so it wouldnt help me much

 

[bucketofguts]

Thank you!