O2 sensor check

[ivabiggen]

Happy New Year All,is there any easy method (other than replacing) of testing an o2 sensor that the DIY slob can do.Asking this question because since doing a 2 hole mod and k@n fuel use has shot up to 15.5lt per 100 around town, pre mod was getting 10-11 around town,old guy driving, have just put some injector cleaner in,hav'nt changed plugs only 57k, any advice appreciated.

[showbags]

Happy New Year All,is there any easy method (other than replacing) of testing an o2 sensor that the DIY slob can do.Asking this question because since doing a 2 hole mod and k@n fuel use has shot up to 15.5lt per 100 around town, pre mod was getting 10-11 around town,old guy driving, have just put some injector cleaner in,hav'nt changed plugs only 57k, any advice appreciated.

I think it would be more likely to be oil from your K&N in your MAF sensor. Go buy yourself some CRC MAF Cleaner and see how you go. A stuffed O2 sensor will throw up a code.