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      11-03-2022, 11:12 AM   #41
heynow328D
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Drives: BMW 328D
Join Date: Jun 2019
Location: SF Bay Area

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Quote:
Originally Posted by Enabled View Post
And to add to this, a bit.

Around 7-8 years of age, especially in hotter climates, expect to have to change the coolant output flange/pipe that is mounted under the intake manifold.

https://www.realoem.com/bmw/enUS/sho...diagId=11_4565 #12 here

Mine cracked at 143,000 miles, on a roadtrip, and spewed about half gallon of coolant per 20 minutes.
Luckily a nearby BMW dealer actually had one in stock and I replaced it myself in a parking lot quickly. It requires pulling the manifold out of the way a bit.
I just replaced the valve cover gasket but I am sold on doing this. Never removed the intake plenum before. Do you recommend skipping some of these BMW instructions to get to the coolant pipe? Thanks.

Disconnect negative battery lead.
Remove acoustic cover
Remove rear acoustic cover / injectors.
Remove sound insulation bulkhead upper part, centre.
Remove intake silencer housing.
Release electronics box and set aside.
Remove pressure pipe at throttle body.
Appreciate 0