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      03-03-2021, 12:48 PM   #1
bbarggren
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Drives: 2015 BMW 328i GT xDrive
Join Date: Mar 2021
Location: Dillon CO

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Smells like burning plastic

Looking for some help with my 2015 328i GT xdrive. For the past week, there has been an occasional smell like melting wax and burning plastic/rubber. I did the first logical thing by replacing the drive/serpentine belt last night. The car has 80K miles on it, so it was due for a belt anyway. Still stinks. I took off the engine cover and the thick foam layer underneath it expecting to find something melting....no dice. I saw a puff of smoke at idle from the passenger side and it looks like SOMETHING is leaking and dripping on the exhaust. I'm 99% sure it's not fuel as I would smell gas under the hood and my car would be on fire. I did replace the high pressure fuel pump a few moths ago but it looks OK.

What's dripping on the exhaust?!?!?!?!

It's hard to pinpoint because it only happens maybe once every 5-10 minutes.