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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N57 / M57 Turbo Diesel Discussions - 335d > 335d Coolant Loss, head gasket?



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      11-21-2019, 08:58 AM   #1
Shmee
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I have a 2011 335d dpf, egr, scr delete done 1000miles ago. So the past few days I've noticed I've been losing a bit of coolant, the light didn't go off but I was checking it and it was almost down to the sensor. Did some searching and found it was coming from under the manifold so I took that off and did not like what I found. I'm leaning towards the gasket being blown but the hose fitting that goes to the interior there is covered in white residue so maybe that was leaking out. Cleaned it up, noticed residue inside the fitting, and put it back together. The coolant still looks normal and I'm not seeing any milky look to the oil either, but I don't wanna risk anything. I'm gonna monitor it over the next couple days, but has anyone done a head gasket in these? is it pretty straight forward? Here's some pics

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      11-21-2019, 12:47 PM   #2
335dlci
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Your flange is cracked.... clearly
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      11-21-2019, 01:19 PM   #3
Shmee
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You mean that Y on the coolant line? I pulled it out and cleaned it up and tried blowing on it with the ends block off, nothing leaked out. It was just dirty
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      11-21-2019, 04:17 PM   #4
335dlci
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Quote:
Originally Posted by Shmee View Post
You mean that Y on the coolant line? I pulled it out and cleaned it up and tried blowing on it with the ends block off, nothing leaked out. It was just dirty
Well try a pressure tester than.
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      11-21-2019, 05:45 PM   #5
Shmee
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Alrighty, thanks for the input 335dlci. Gonna try to replace that flange and the line to the cabin and see if that fixes it. Iíll update this when done so others can have a reference.
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      11-22-2019, 08:09 AM   #6
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Quote:
Originally Posted by Shmee View Post
Alrighty, thanks for the input 335dlci. Gonna try to replace that flange and the line to the cabin and see if that fixes it. Iíll update this when done so others can have a reference.
I did my flange and the both hoses leaked right when I plugged them in.
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      11-30-2019, 08:39 AM   #7
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Flange and hose did it. Not losing a single drop now thankfully. Thanks for the Tip
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      12-02-2019, 04:29 AM   #8
bmwdiesel
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how come ur engine is dry like that!!??? mine is oily all over the place
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      12-02-2019, 11:49 PM   #9
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Maybe you have a boost leak spewing oil around?
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      12-03-2019, 05:04 PM   #10
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how come ur engine is dry like that!!??? mine is oily all over the place
Fix the leak and clean it
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