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      02-23-2025, 07:49 PM   #1
N54MDBL
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Drives: 2013 335is Convertible 6MT
Join Date: Feb 2023
Location: Idaho

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335is Coolant Leak From Above Front Turbo

I'm trying to fix a coolant leak coming from above my front turbo. It's dripping from the wastegate housing (I think) at about a drop per minute (see pics). I thought it was the coolant return line as that is right above the wastegate housing. However, I just finished replacing the coolant return line and the O-ring on the supply line and as soon as I refilled the coolant it started right back up at the same flow, even before I did the coolant bleed procedure. I'm at a loss and am seeking guidance from the community.
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Last edited by N54MDBL; 02-23-2025 at 07:51 PM.. Reason: Resize photos
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