![Engine Rattle on start-up.. idk if you guys can hear it well in the video but this happens on start up all the time, goes away after a couple seconds. It's an Engine Rattle on start-up.. idk if you guys can hear it well in the video but this happens on start up all the time, goes away after a couple seconds. It's an](https://external-preview.redd.it/nX6r_flkiTN2tR1I2MZ7lrR6sflZ5VTeCIejKg-A7xk.png?width=640&crop=smart&format=pjpg&auto=webp&s=c0929c83399881d7b3dac26d6f45734b2a888dbb)
Engine Rattle on start-up.. idk if you guys can hear it well in the video but this happens on start up all the time, goes away after a couple seconds. It's an
![Loud rattle on cold start, happens only sometimes on warm starts, thinking it could be the check valve. If I put the key in accessory for 5 seconds, go all the way Loud rattle on cold start, happens only sometimes on warm starts, thinking it could be the check valve. If I put the key in accessory for 5 seconds, go all the way](https://i.redd.it/al0hgfgskkna1.jpg)
Loud rattle on cold start, happens only sometimes on warm starts, thinking it could be the check valve. If I put the key in accessory for 5 seconds, go all the way
![HOW TO FIX BMW ENGINE NOISE RATTLE KNOCK BMW F30 F31 F32 F33 F36 F10 F11 F20 X1 X2 X3 X4 X5 Z4 - YouTube HOW TO FIX BMW ENGINE NOISE RATTLE KNOCK BMW F30 F31 F32 F33 F36 F10 F11 F20 X1 X2 X3 X4 X5 Z4 - YouTube](https://i.ytimg.com/vi/3rnSQ7jMOcw/maxresdefault.jpg)
HOW TO FIX BMW ENGINE NOISE RATTLE KNOCK BMW F30 F31 F32 F33 F36 F10 F11 F20 X1 X2 X3 X4 X5 Z4 - YouTube
![Weird rattling noise near front of engine and bouncing idle on startup (E46)(328Ci)(1999) : r/BmwTech Weird rattling noise near front of engine and bouncing idle on startup (E46)(328Ci)(1999) : r/BmwTech](https://external-preview.redd.it/ymntus4mOBMTgcLDaATzzXMoryvoacWT3a4lxsVNbJg.png?format=pjpg&auto=webp&s=b202ea3e2a62538d80240ab1698b7981a86a2ad2)