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What is this and where does it go? wet spot_oil leak
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12-05-2018, 09:24 AM | #1 |
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What is this and where does it go? wet spot_oil leak
The other day I lifted my car to change out the transmission fluid and filter and noticed an oil leak. The problem here is that I don't know what the connection is or where does it come from. The leak is on the passenger side next to the catalytic converter.
I have owned this car for appx 8 years now and has been maintained by the BMW (under warranty & extended warranty). I do all my repairs and have been since I was in my early 20s. The problem now is that I know very little about BMW's, I have owned several Nissan's, Acura's, Toyota's and GM trucks. Last edited by 335ivin; 12-05-2018 at 02:26 PM.. |
12-05-2018, 11:55 AM | #3 |
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Yeah start from above. If it's not valve cover gasket or oil filter housing area leaks I wouldn't worry about it until it's leaking a lot. Make sure your belt is clean and dry.
Sometimes the oil filter housing can leak only on the backside. This is what happened to me and the way I dwelve into it was my coolant had just little amounts of sludge and oily film. |
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12-05-2018, 01:30 PM | #4 |
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It could be the oil pan gasket or the valve cover gasket. I wouldn't rule out your rear main seal either, but it's likely one of the other two. The OPG isn't difficult, per se, but it is time consuming. You would need to put the car on jack stands, hold up the engine with a support bar, drop the subframe, unbolting the steering rack as well, and then drop the oil pan. Some people say it's not worth it to DIY, but when I did it the car was not my only vehicle, so I took a few days and did it in chunks. It sure was nice to only be out tens of dollars and some of my time verses thousands of dollars to have a shop do it.
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12-05-2018, 02:15 PM | #5 |
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You have an oil leak?
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12-05-2018, 02:25 PM | #6 | |
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Quote:
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12-05-2018, 03:33 PM | #7 |
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12-06-2018, 06:51 AM | #8 |
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Update
Last night after work I started looking into the mysterious leak, after looking at it closer I saw the inlet piping by the rear turbo soaked with oil. At first I thought it was coming from the oil supply line but saw that those areas were bone dry. I followed the inlet piping up and saw that it ties into the PVC valve. I removed the plastic that's on top of the valve and saw wet oil spots all around the PVC valve. With that said are these cars known for leaking oil there too? I'm going to install a catch can to see if this keep the oil out. I've attached a picture of the inlet piping to the rear turbo, how is that pipe clamped down? I don't see a clamp. By the way, after doing all that investigation I realized the first pictures I posted are from the motor mount. lol Last edited by 335ivin; 12-06-2018 at 12:59 PM.. |
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12-06-2018, 11:15 AM | #9 |
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12-10-2018, 02:02 PM | #10 |
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12-10-2018, 02:33 PM | #11 | |
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Both turbo inlet pipes (front & rear) do not require any clamps. They're engineered to slide over the turbo at the inlet and they have a rubber insert to help them stay in place, the rest of the inlet pipe is fastened to the engine along the way and helps it completely stay in place.
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12-10-2018, 03:48 PM | #13 | |
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I'm coming from the Jaguar concept of undercarriage rust prevention by regular oil leak. It's actually a very cheap & effective means of being able to loosen 20- to 30-year-old fasteners, at least until things get entirely out of hand. George |
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12-10-2018, 08:51 PM | #14 |
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North Sea oil, the first anti-seize!
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A manual transmission can be set to "comfort", "sport", and "track" modes simply by the technique and speed at which you shift it; it doesn't need "modes", modes are for manumatics that try to behave like a real 3-pedal manual transmission. If you can money-shift it, it's a manual transmission. "Yeah, but NO ONE puts an automatic trans shift knob on a manual transmission."
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