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Old 12-17-2010, 11:12 AM
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M103 Oil filter housing question

I noticed something while changing my oil last weekend. OPlease refer to the attached pic. I noticed there is a nipple or something coming out of the driver's side of my oil filter housing. Is there something supposed to be attached here, like a hose or something? It have a hole going into it, but I couldn't determine if it was threaded or not. Please let me know if all is normal or if something should go in there. Thanks, all!

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Old 12-17-2010, 11:16 AM
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I recall there being an oil pressure sending unit over there somewhere, but if your oil gauge works, then its probably nothing.
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Old 12-17-2010, 11:17 AM
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I think the sending unit is lower, forward on the block, isn't it?
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Old 12-17-2010, 11:23 AM
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Definitly in the back there. Has a single wire hooked to it. Does your oil guage work?
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Old 12-17-2010, 11:24 AM
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Yes.
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Old 12-17-2010, 11:24 AM
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Quote:
Originally Posted by MattBelliveau View Post
I think the sending unit is lower, forward on the block, isn't it?

You are probably thinking og the oil level sending unit which is on the side of the oil pan.
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Old 12-17-2010, 11:28 AM
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Come to think of it, it is nothing. Its just a nub that gets in the way if you wanted to take your housing off. If you feel it, you will notice no threads at all.
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Old 12-17-2010, 11:30 AM
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Originally Posted by lorainfurniture View Post
You are probably thinking og the oil level sending unit which is on the side of the oil pan.
I was just about to reply with that one. And you seem to be correct. Will not having this in place cause massive hemeraging of oil, as I am experienceing? I bought the can a couple years agao, and run through a quart every fillup, and have never been able to pinpoint the leak. Makes me wonder what the PO did here. From looking at the part on FL, it looks like it have a single pole electrical connection. I wonder if they just grounded the signal somewhere, and maybe that's why my gauge is working.
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Old 12-17-2010, 11:32 AM
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Also, does anyone happen to know what the threads are on that pc, so that I can just throw a cap in there until I can get a new one? Thanks.
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Old 12-17-2010, 11:36 AM
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If it was grounded out, it would read 0 or 3bar, with no fluctuation at all. If it goes down a bit at idle then the pressure sensor is there, and working.

M103 engines can leak all over the place. Front timing cover is the usual suspect, along with the rear main seal, valve cover. etc.

Do you ever find a puddle of oil when its parked for a while?

If not, you are probably burning it via your valve stem guides.
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Old 12-17-2010, 11:39 AM
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Also, does anyone happen to know what the threads are on that pc, so that I can just throw a cap in there until I can get a new one? Thanks.
If that wasnt there, you would be losing a quart every few minutes, versus every fill up. 3 bar is like 40 psi or something. you would definitly notice that

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