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#211
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- At cold initial startup it sucks a blast of oil into the hoses and the hoses wanted to collapse from the vacuum (oil in right hose is always more then left side - could be left CCV valve closes/seals first). Within a minute I hear a ticking (like a lifter) - it stops ticking within seconds then the hose returns to shape (vacuum adjusts) Assuming the valvetronics/throttle valve are adjusting themselves. With the clear hoses, I can see that the oil in them has a chance to drain back easily to the valve cover. With the OEM (corrugated) tube assembly, the oil is trapped in the canals waiting for the next cold startup (high vacuum). ** Remember in cold conditions, the throttle valve is fully open because this has a positive effect on the starting characteristics. (Copied from BMW Training Manual) ** |
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#212
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Intake and oil
I'm still working on the smoking issue. I finally took off the air tube to my intake today, and took a photo inside of the intake. I was looking for the oil in the intake issue many have been talking about. I am posting the photo here. I don't see any oil to speak of, I mean there is some black, but no oil. Does this mean that the issue is not caused by vacuum issues? Or could it still be a vacuum issue?
I hope this link works https://plus.google.com/u/0/104640325132930366002/posts |
#213
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Here's a photo of my test hose assembly (Black OEM hose SIB below; You may have 2 separate hoses on yours - see this SIB: http://www.xoutpost.com/attachments/...b-11-01-07.pdf |
#214
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#215
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- Year, Model, Engine, Miles - How are your CCV diaphragms? - CCV hose condition (a small leak can act just like bad diaphragms) I have a problem with carbon buildup on my pistons that I'm trying to get clean. My engine sucked oil for so long that my piston tops look like a mountain range. You need to check the obvious and work from there. |
#216
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#217
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#218
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oil in hose
Okay, I got one of the hoses off. It seems to have some oil residue inside, but it is by no means pouring or even dripping out of the hose. But if I put my finger in it there is oil on my finger.
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#219
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My wife just took the car - otherwise I'd photo. The outer ring on the fitting has 2 pinch points (index & thumb on opposite sides squeeze - if plastic is stiff - use a small screwdriver at ring attached to hose assembly. If you're not sure - I'll post a photo later.
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#220
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And it smells badly of oil.
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4.8is, idle, n62, smoke, valve stem seals |
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