What is this below the oil filter?

[Joey]

My car drinks its oil capacity about every 500 miles, and I've found this hole about an inch and a half below the oil filter that has nothing at all in it. A mechanic who hosed it down with brake cleaner says that the motor stalled if he hit that spot, so apparently it's getting vacuum...?



I found this picture in someone else's thread, and I can't tell if that's just a plug or a sensor of some sort, but there's absolutely nothing there on my car and a ton of oil is leaking through it. To be clear, this isn't the oil pressure sensor, which is right above the filter. I have one of those, it works.

[Chrisisiced]

Isnt that the knock sensor?

[The G-Man]

That is a knock sensor. If you have the stock motor there should not be a sensor there, just a plug.

[Joey]

Awesome.
Happen to know the bolt size / thread pitch? I'm guessing I can't just cork it with rubber since it's pressurized.

[NAiL05]

You sure its not coming from your oil filter? Knock sensors usually dont go in the engine. They are not pressurized unit. Its a piezo electric crystal whatever that transmits vibration into electricity.

[Joey]

I just replaced the oil filter (twice), and there were no left over gaskets, so that's not the problem. I read several threads about the thing it screws onto coming loose, and that may well be going on, but since there's a plainly empty opening in the block I thought I'd check that first. If oil is still dripping onto the downpipe the oil-filter-mount-whatsits is next in line.

That's awesome if it isn't pressurized though, I might not have to track down a really old, obscure part.

[Leung]

wait dont some of the trim levels come with an oil cooler?

[NAiL05]

Which motor is this? If its an f22a then its an oil pressure switch since they DO NOT have knock sensors.

[Joey]

Stock F22A4, and the oil pressure thing above the filter works fine.
Or is the oil pressure switch something different?

[C91BLX7]

Which motor is this? If its an f22a then its an oil pressure switch since they DO NOT have knock sensors.

Yeah. That would make more sense than a Knock sensor leaking oil.

[Straight Success]

The oil is probably leaking from your oil filter housing. There's an O-ring that's like .50 cents that sometimes crack behind the filter housing. You may wanna check that out.

[jhondayaaj]

the leak is coming from your oil filter cooler o ring.

[d112crzy]

You should have a plug like this

[C91BLX7]

You should have a plug like this

Isn't that suppose to be like a coolant drain? and the pressure sensor is above the filter correct?

[accordaffair]

You should have a plug like this

yeah that's what my car has