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Alright before we start the car is a 2007 e90 323i with an n52 (200hp same as European 325i) it also has 298,563kms on it. Valve cover and ALL gaskets were replaced less then 10,000km ago. Has ZERO codes runs smooth( besides irregular misfire)…
It recently started to misfire. Cylinder 3 was the culprit. But it was odd because the car would randomly start to misfire even after running fine for a while on a drive. But I pulled over shut the car off and started it agian and it was fine for a couple days. Then it did it again so I pulled over shut it off then started it agian and it was fine. So it being random like this I thought coils because they’ve NEVER been replaced. So I replaced all coils. But well I was doing that I saw the eccentric shaft sensor gasket was leaking. And knowing the potential problems. I inspected the sensor seal and noticed the NEW gasket was split and I can actually see into the engine… so I took the connector off and found this(see below). Mind you this gasket was replaced less then 10,000km ago.
And in the pictures below you can obviously see that, well it’s bad. And in the second photo is the split in the gasket. But I also noticed the sensor seems kinda miss aligned. But it’s not loose ( i checked) so I’m going to ignore that right now.
I’m going to try and replace the gasket with out taking the valve cover off because it leaks nowhere else. If unsuccessful I will resort to RTV.
But the reason for this post.
1 opinions.
2 do you think the oils is coming up from the pins. Mind you the car runs fine.(I took it for a drive after replacing coils and no signs of misfire and was noticeable smoother.)
3 I really DO NOT want to take the valve cover off again.
This is not a daily driver anymore so I have time to work on it.
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