Still chasing an oil leak on the front of my engine, I pulled the Crank Position Sensor and found that I'd smeared the o-ring badly when I replaced the sensor ~20k ago.
Of course it's a THIN o-ring, and none of my kits come anywhere near having one that thin.
I ended up putting a "normal" thickness o-ring behind the collar that centers the sensor in the bore, and it sealed against the block when I installed it, so we'll see if that had anything to do with the oil on the top of the oil pan flange area, and dripping off of the engine.
I'm suspecting that the oil filter housing gasket just didn't seal properly when I replaced it, and have another here to try again if I have to.
Haha I can't win with my car and oil leaks. I had a leaky aftermarket valve cover, put a light light smear of RTV under it, that stopped it from leaking down the back of the engine.
Then on my old vac pump, it was leaking, replaced the o-rings, that pump gave out. Then the new vac pump I got with new o-rings, installed that, IT started leaking.
So I pulled it, light smear of rtv on the o ring where the pump meets the head, installed it, good to go from there. But now, I have another leak coming from the vac pump, I can see a mini puddle, and I suspect it's coming from the inner pump o ring.
I'm not dealing with it now though, I'll fix it up next TB job or if I get bored. It's enough to leak a little down the back of the block, but it's not coming down the oil pan, just a bit on the mount down low.
I don't like the design of our vac pump...2 bolts to hold the thing down. I don't over torque it, but it's my suspicion that not having more bolts gives too much uneven clamping and with the temp that thing can get to when it works hard causes it to expand more than the head and the o-ring can't just do it's job anymore.
Edit: Disregard that statement, it's 3 bolts not 2 (was thinking of the bracket that bolts to the pump, not the pump bolts themselves
