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General E46 Forum
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Old 02-15-2016, 05:45 PM   #1
iowna330xi
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M52 Intake Manifold Removal?

Hey guys, would it be worth it to remove my intake manifold during the winter? I have a coolant leak right under it, and Im pretty certain its coming from the heater hoses. I already have the o rings for the hoses, but I still need to order the manifold gasket. How many hours approx. did it take for you guys to remove and install the manifold? Ill be working in the garage in around 37 degree (F) weather.
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Old 02-15-2016, 09:14 PM   #2
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It takes about 6 to 8 hours the first time. Quicker the more times you do it.

You need the hard water pipes under the intake. They get brittle and leak.

You want to replace the hard water pipes, the CVV, intake manifold gasket, intake boots, and small vacuum hoses.


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Old 02-29-2016, 10:59 PM   #3
iowna330xi
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Okay, thanks for the info. I finally went through with it, and I replaced the coolant heater hose. No more leaks! Now i can finally switch to bmw coolant just for the "originality" effect. Im able to remove the manifold in less than an hour now, after having to remove it repeatedly.
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