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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > NA Engine (non-turbo) / Drivetrain / Exhaust Modifications > N52 sucking in valvetronic gasket



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      07-03-2020, 05:11 PM   #1
E90_Rage
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N52 sucking in valvetronic gasket

Hey there!

As of recently, my car has been "eating" valvetronic motor gaskets... The gasket has been replaced 4 times in the last 2 months, it lasts a week or so before getting sucked in by an excessive vacuum (noticed the vacuum after removing oil cap, she's sucking like a shop-vac). At this point, I'm not certain where to start... The valve cover was replaced roughly 5 months ago, and the car ran fine up until the gaskets kept failing. I assume maybe the valve cover is to blame, but before I go replacing it again... Is there anything else I should look at?

Thanks for any guidance, it's greatly appreciated.
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      07-03-2020, 05:59 PM   #2
b1aze
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Did you use an OE valve cover?
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      07-04-2020, 01:47 AM   #3
E92William
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That's weird maybe your new valve cover has a bad pcv which is odd. There's a replacement diaphragm that's sold in Russian Bmw parts sites you might wanna try that.
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      07-04-2020, 07:40 AM   #4
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Plastic or metal valve cover?
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      07-14-2020, 03:15 AM   #5
HydroxFrost
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Quote:
Originally Posted by E90_Rage View Post
Hey there!

As of recently, my car has been "eating" valvetronic motor gaskets... The gasket has been replaced 4 times in the last 2 months, it lasts a week or so before getting sucked in by an excessive vacuum (noticed the vacuum after removing oil cap, she's sucking like a shop-vac). At this point, I'm not certain where to start... The valve cover was replaced roughly 5 months ago, and the car ran fine up until the gaskets kept failing. I assume maybe the valve cover is to blame, but before I go replacing it again... Is there anything else I should look at?

Thanks for any guidance, it's greatly appreciated.
Try replacing just the pcv itself as opposed to the new valve cover gasket, its a lot cheaper than the whole valve cover. Excessive vacuum almost always points to a bad PCV on these cars.

https://www.amazon.ca/Aquiver-Auto-P...76098927&psc=1
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