M5POST - BMW M5 Forum - View Single Post - Rpm drop when revving on neutral / park!!!

JoepM5 · 11-05-2022, 07:26 AM

Hi,

I had exactly the same issue a few months back and it turned out to be the engine running too rich due to a faulty HPFP on one of the banks. Replaced both.

Best,
Joep

11-05-2022, 07:26 AM	#3
JoepM5 New Member 12 Rep 28 Posts Drives: M5 F10 & M3 E30 Join Date: Oct 2021 Location: Amsterdam iTrader: (0)	Hi, I had exactly the same issue a few months back and it turned out to be the engine running too rich due to a faulty HPFP on one of the banks. Replaced both. Best, Joep
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