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pressure in oil !

Specific discussion about the E89 2009 Z4 (sDrive35is, sDrive35i, sDrive30i, sDrive23i)
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mel_2013
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pressure in oil !

Post by mel_2013 » Sat Apr 07, 2018 8:46 am

after having all the gaskets in the engine fixed I have now found that when I remove the oil cap when the engine is running there is pressure! I have been told that this is to do with some filter in the engine , but apparently you cant buy the filer separate you have the buy the whole valve cover at £320 !!! I have Bmw insured warranty , will this cover it ? or does anyone know of any idea on how to revive my filter ! thank you

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Smartbear
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pressure in oil !

Post by Smartbear » Sat Apr 07, 2018 8:53 am

Hi, is your car burning oil? If it’s not & your oil level doesn’t need topping up regularly I wouldn’t worry about replacing the valve cover. When the engine breather goes bad the car tends to burn its own oil vapours.
Also, when you say pressure do you mean positive or negative pressure? Its supposed to be slightly negative, creating a vacuum you can feel whilst pulling the oil filler open :?
Rob
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e89 Sdrive 20i, plenty of mumbo & good economy-the thinking bears z4
e89 Sdrive 30i, this ones busted, pass me another...
e85 3.0si sold

mel_2013
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pressure in oil !

Post by mel_2013 » Sat Apr 07, 2018 8:56 am

no the oil doesn't seem to be dropping but there has been oil dripping onto the exhaust manifold because of a leaky solenoid gasket which is being replaced on Monday along with new spark plugs . From what the mechanic said it seems the gasket has gone because of the filter being blocked! there is no smoke coming from the filler cap .

mel_2013
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pressure in oil !

Post by mel_2013 » Sat Apr 07, 2018 9:18 am

on the question of negative or positive all I can describe it as is like when you open a bottle of coke and it does that hissing !! :|

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pressure in oil !

Post by Maniac » Sat Apr 07, 2018 9:34 am

If you have warranty, let the dealer worry about it. It should cover stuff like this dependent on the level of cover.

mel_2013
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pressure in oil !

Post by mel_2013 » Sat Apr 07, 2018 9:39 am

I don't understand why you cant buy a filter separately , its ridiculous :headbang:

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Smartbear
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pressure in oil !

Post by Smartbear » Sat Apr 07, 2018 10:27 am

mel_2013 wrote: Sat Apr 07, 2018 9:39 am I don't understand why you cant buy a filter separately , its ridiculous :headbang:
If it’s not burning oil you probably don’t need to worry about replacing the cam cover, so does the filler cap feel like it’s being held down when you open it with the engine running?
Rob
Image

e89 Sdrive 20i, plenty of mumbo & good economy-the thinking bears z4
e89 Sdrive 30i, this ones busted, pass me another...
e85 3.0si sold

mel_2013
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Joined: Sun Aug 23, 2015 2:14 pm

pressure in oil !

Post by mel_2013 » Sat Apr 07, 2018 10:41 am

no the filler cap feels like it cant wait to be released ! no oil or smoke spurts out it just hisses !

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