High rpm issue

Emilio_dlp · 07-21-2020, 03:45 PM

Hi,

Since a few days ago, I have noted that my M3 does not go up so fast from 7000rpm to 8400rpm and the diagnosis does not show any fault.

Before this I timed the 100-200kph and it was 10.9-11.2 seconds, and now on the same road it reads 11.8-12.0 sec.

Does anyone know what the problem might be? maybe ignition coils? The spark plugs are approximately 12,000km

How could I make a real time log to verify what the failure might be?

Thanks!!

Kwike92M3 · 07-21-2020, 08:19 PM

Its very possible that timing was pulled due to excessive atmospheric temperatures. Its more common to see this with supercharged vehicles, however. I live in texas, so after a few hard pulls there is a noticeable power difference. Id be curious what ambient and intake air temperatures were @ the time of the incident, as well as quality/octane of fuel being used.
Otherwise, it is possible that an ignition coil(s) is starting to fail, but that will typically be seen through misfire codes once it registers a couple of times.

07-21-2020, 03:45 PM	#1
Emilio_dlp New Member 2 Rep 7 Posts Drives: Bmw M3 e92 Join Date: Dec 2019 Location: Spain iTrader: (0)	High rpm issue Hi, Since a few days ago, I have noted that my M3 does not go up so fast from 7000rpm to 8400rpm and the diagnosis does not show any fault. Before this I timed the 100-200kph and it was 10.9-11.2 seconds, and now on the same road it reads 11.8-12.0 sec. Does anyone know what the problem might be? maybe ignition coils? The spark plugs are approximately 12,000km How could I make a real time log to verify what the failure might be? Thanks!!
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07-21-2020, 08:19 PM	#2
Kwike92M3 Private First Class 81 Rep 146 Posts Drives: 2011 E92 M3 Supercharged Join Date: Aug 2014 Location: Dallas iTrader: (2)	Its very possible that timing was pulled due to excessive atmospheric temperatures. Its more common to see this with supercharged vehicles, however. I live in texas, so after a few hard pulls there is a noticeable power difference. Id be curious what ambient and intake air temperatures were @ the time of the incident, as well as quality/octane of fuel being used. Otherwise, it is possible that an ignition coil(s) is starting to fail, but that will typically be seen through misfire codes once it registers a couple of times.
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