[KJL]

Originally Posted by Matt B

I'm afraid I am one of many . Phil's my first address, hope he can help me out. Repair yes, I will consider. Just wondering if I can safely use degreaser / brake cleaner to rinse off engine oil? Otherwise my bond will not cling to the mating surfaces... Not sure what's inside the sensor and I don't dare to ultimately break it.

That is an issue. The problem is the sensor plastic case has oil inside it. No matter what I did, oil kept weeping through. I cleaned the best I could with brake cleaner and filed kind of a flat where the crack was which went up the side and half way across the top. I coated the areas with JP weld for plastic and skim coated the top....must keep it thin as the clearance between the cam and sensor is pretty tight. I then sanded it smooth and blended/contoured it the best I could. I used silicone sealant in the o-ring pocket and installed the new o-ring, blended it around the oring and let cure overnight. Installed a few days later. No issues so far but have not driven it much either.

While I am not certain, I am guessing the sensor is potted in some sort of epoxy material which is why these things continue to work even when full of oil. I think most of them are cracked, it is just when that crack makes it into the oring groove, it begins to leak and possibly past the wire entry point.