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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > NA Engine (non-turbo) / Drivetrain / Exhaust Modifications > valvetrain noise when hot. knocking, slapping



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      10-13-2017, 04:31 PM   #1
p.s.
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valvetrain noise when hot. knocking, slapping

As my oil gets hot I have noticeably louder valvetrain noise. It I'm running 0w40 synthetic and it's about 65 degrees if that matters. Its very much noticeable with the hood down outside the car and I don't remember it being as audible as it is now. I've tried disconnecting spark plugs as a way of determine bottom end noise but I couldn't draw any conclusions doing this. I bought a car stethoscope but I also can't really come to any conclusions. Even when i rev it up its hard to determine if the thumping follows the revs.

Anyway, I made a vid. I'm clueless, no codes. I appreciate any input.

Also does anyone know which menu in inpa shows oil pressure?

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      10-14-2017, 04:23 PM   #2
JuniorB
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Sounds normal to me, now if was ticking....
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