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BMW 3-Series and 4-Series Forum (F30 / F32) | F30POST > Technical Forums > B58 Turbo Engine / Drivetrain / Exhaust Modifications > (HELP)Weird noise after spirited driving
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      11-15-2023, 02:46 PM   #1
Bxrger
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Hey yall just wanted to share this clip of the noise I got after opening my hood after some heavy driving. It sounds like sputtering liquid but I don’t see any signs of wet marks/ visible leaks. It only lasted about 30 seconds then shut off. Do y’all think it’s the pump? Or leaking coolant? I tried starting it again and giving it a couple revs to see if the noise happened again but it didn’t. Anything helps to ease my mind so do let me know if y’all have ever heard this before! (The noise is coming from the right side of engine by the coolant lines and such) sounds more down low/ in the back

https://www.dropbox.com/scl/fi/hssj3...znjq4ykgv&dl=0
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      11-16-2023, 02:09 PM   #2
ZXMarine72
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Electric water pump running maybe?
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      11-17-2023, 09:17 AM   #3
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the sound is normal AFAIK. You don't even need to be doing any spirited driving for this to occur. sound could be caused by a bit of air being trapped in the coolant system; you could try a bleed.
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      11-28-2023, 03:48 PM   #4
Bxrger
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Quote:
Originally Posted by Dom147 View Post
the sound is normal AFAIK. You don't even need to be doing any spirited driving for this to occur. sound could be caused by a bit of air being trapped in the coolant system; you could try a bleed.
I’m going to try a bleed today, however I don’t really hear it after casual driving. I’ve been opening the hood after everytime I drive to see if the noise persists but it only happens after giving some boost and flooring it. You think any posssibility of my intake manifold somehow leaking inside? Thats where the noise seems it’s coming from
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      11-30-2023, 01:24 PM   #5
gantona
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I may be wrong, but I think there is an electrical water pump on the main coolant circuit to cool the turbo after running,
With engine off.
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