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post #11 of 12 Old 29th September 2016, 11:57 PM
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Originally Posted by MssT View Post
Hi there,
i think my problem with my engine belongs in this topic.
My s85 has loss of power from 3500 rpm up to max rpm.
A had a driving event last weekend and noticed that the engine was using 0.7 L oil in 350 km.
When i drove home i noticed loss of power.
There was no engine error code shown in the display
It is possible the oil use has nothing to do with the power loss but i think it is good to tell about it.

At home i did a compression test and the readings where from 8 to 9 bar for all cilinders. Not bad i think.
All spark plugs looked oke and had the same color.
when i connected with bmw inpa the engine showed no codes so i did some tests with vanos and lambda.

I noticed a few things with the tests.
system test L sonde dyn en katalysator: katalysator diagnosetest bank1: 0,256. bank 2: 1,673

And with the vanos test i noticed that one measurement was in to the red of the green/red beam.
Messwert einlas 2: verstellzeit zu kleine spreizung ms 1000
Im thinking about a bad lamda sensor bank 2 or a bad vanos inlet solenoid at bank 2.
Maby somone can help.
It seemed that de katalysator diagnosetest with inpa was not topical.
The readings did not change at all during the test.
I discovered a defect temperature exhaust sensor on bank 2.
After replacing it with a new one inpa showed that it was working again but it had no influence on the power loss.

There is also a oil leakage in front of the engine. I cant see what is leaking but it can be a vanos part.
I think the vanos ventil güte readings are not so good for E2 (see picture).
Do i need a new solenoid?
Has this reading any thing to do with vanos pressure?
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post #12 of 12 Old 6th November 2016, 06:58 PM
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So i tested the vanos pump pressure and it was oke. Readings from 65 bar from idle to 90 bar in high rpm.
i changed the vanos solenoid on E2 and the ventil gute are all fine now.
The car pulls little bit better but its not like it used to be.

I checked my engine oil filter and it looks oke.
I only found 2 very small(1mm) pieces of metal.

The next step is to change the fuel filter although the fuel test with inpa did not detect a error.
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