To me it looks like that probe has started coming out. You can see where the original old burn mark is, that marks the original center position of the airflow in the manifold port. I think you got two lengths, 90mm and 120mm (speaking under correction). Either way, that would leave less probe inside the port than outside. Problem now is to get it back into the ferrule. Once you take to it with a spanner, you never seem to get it tightened up again to hold the probe. Actually, once it has let go once, it will do it again and again. I used to bash mine back with a shifting set to just fit over the top, but would let the wire come through the gap between the jaw. then take to it with a small hammer and bash it till it hits the bottom of the manifold.
Don't take my advise on this method, I just had to do my first fix when the probe came out all the way on the road, and left a place for a lot of noise and flame to come out at full boot. Hence the hillbilly fix.
David - Bfreesani
1997 Nissan Sani MK3 2.7TD - Hillbilly (SAFANI)
MQ Patrol C200 SFA
MQ Patrol H260 LSD Rear
MQ Patrol Transfer as second low range
33"x12.5x15" tires on 8.5J rims
DIY rock sliders