2002 highlander has been running in the "limp mode" / safety mode as my knock sensor is in process of being replaced here by myself... while I was at it I decided to replace the plugs... but they look a bit white to me... I have experience in powersports equipment... and I would say on a premix 2 stroke these would look lean... but I am not as good with cars, so I could use some other opinions please...
There are a few things to consider possibly:
1) car has been running in limp mode which I think retards the timing
2) have added a few containers of gum out and sea foam to gas tank in the past month
3) car has about 100,000 miles and these are original plugs as far as I know
4) have been running 93 octane for the past week... figured since the car was in limp mode it might be a good idea...
5) I have been resetting the problem code for the knock sensor for the past couple hundred miles which may change something since the knock sensor was not giving a good signal...
here are the pics
Thanks for any help!
There are a few things to consider possibly:
1) car has been running in limp mode which I think retards the timing
2) have added a few containers of gum out and sea foam to gas tank in the past month
3) car has about 100,000 miles and these are original plugs as far as I know
4) have been running 93 octane for the past week... figured since the car was in limp mode it might be a good idea...
5) I have been resetting the problem code for the knock sensor for the past couple hundred miles which may change something since the knock sensor was not giving a good signal...
here are the pics
Thanks for any help!



