I believe it is the camshaft position sensor that is leaking. Here are the pics:





Do I have to replace the entire sensor unit or can I simply take it out and find a new o-ring and hope it seals it?

When I do take it out, is there any chance oil will come out?

Thanks,
David

 

you could try one of the o rings at home depot or lowes. Ive had luck finding oils there. The come in a variety pack and are only a couple of bucks. Got my 5th gen IACV o-ring there.

 

I've been able to get some '00vi o-rings from good 'ole depot or lowes. The other option would be to remove the o-ring, wipe all surfaces down with a rag/brake cleaner, put the o-ring back in, and permetex grey it up.

 

You could always try that gasket maker. Could the sensor be coming loose? No oil will pour out when you take it off it splashes around there when the engine is running.

 

They only leak while you're driving because its the only time they see pressure. My GF's Maxima has the same problem. Why wouldnt you just buy the correct O-ring from the dealer, or AutoZone?

Unless they don't sell it separate, I can't see why you would use a generic hoping it'd work.

 

If it's sold separately, you could wait quite a long time for the same thing that you can get locally.

But if you want to get the o-ring from Nissan, you want:
22131-38U00 (for Hitachi make)
22131-38U12 (for Mitsu make)
so apparently there are two makes of Camshaft Position Sensors.

Because (thankfully) o-rings are standard sizes.

Dave

 

Thanks for the info guys. I just assumed they didn't sell the o-ring separately. I'll check into that.

David