Engine knocking sound need help diagnosing

E82werk · 07-04-2023, 03:56 AM

So I started hearing this sound about a week ago but today I really noticed it. It's quite loud with the music off I can hear it in the cabin. It's coming from the rear part of the engine so I don't think it's a wobbly fan or pulley. Hope someone here can help me out. I'd like to add that it's a 128i and the sound is intermittent not sure what triggers it. Video of sound Google Drive link.

NorthernDancer · 07-04-2023, 11:43 AM

Can't tell from video. Vancouver must have some very good independent BMW garages. I can put my finger on about 6 here in Ottawa area.

4JawChuck · 07-10-2023, 04:26 PM

If it’s the tapping sound your hearing as heard in the video…sound like lifters tapping.

07-04-2023, 03:56 AM	#1
E82werk New Member 0 Rep 15 Posts Drives: E82 128i bmw Join Date: May 2023 Location: Canada vancouver iTrader: (0)	Engine knocking sound need help diagnosing So I started hearing this sound about a week ago but today I really noticed it. It's quite loud with the music off I can hear it in the cabin. It's coming from the rear part of the engine so I don't think it's a wobbly fan or pulley. Hope someone here can help me out. I'd like to add that it's a 128i and the sound is intermittent not sure what triggers it. Video of sound Google Drive link.
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07-04-2023, 11:43 AM	#2
NorthernDancer Colonel 851 Rep 2,276 Posts Drives: 08 Sedona 128 & 06 330xiT 6MT Join Date: Apr 2011 Location: Ottawa On Canada iTrader: (3)	Can't tell from video. Vancouver must have some very good independent BMW garages. I can put my finger on about 6 here in Ottawa area.
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07-10-2023, 04:26 PM	#3
4JawChuck Private First Class 219 Rep 105 Posts Drives: 2013 128i SE Join Date: Feb 2023 Location: Canada iTrader: (0)	If it’s the tapping sound your hearing as heard in the video…sound like lifters tapping.
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