This looks to me like it was rubbing on something..
The Crankshaft position sensor has only .5 - 1.5 mm clearance between the sensor and the toothed ring.
It may not take much twist of your valve cover to push your sensor into the cam gear.
Take a look at your cam gear when your valve cover is off to see if you can see rubbing marks.
The Crankshaft position sensor has only .5 - 1.5 mm clearance between the sensor and the toothed ring.
It may not take much twist of your valve cover to push your sensor into the cam gear.
Take a look at your cam gear when your valve cover is off to see if you can see rubbing marks.