I have the 650i N62B48 engine. My values for engine roughness are all below 1, no more than 0.7. Your cylinder 7 seems higher than the others. Possible coil breaking down? You could swap number 7 for another and see if the problem follows the coil. People always forget to check the coil end cap to spark plug contact for corrosion, which could result in a weak spark. Did you get to the bottom of the TEV valve error? The remedy is often to remove and clean with carb cleaner. I have a question, my camshaft adaption values don't change when I rev the engine. Do your values stay fixed when revving? I have a small oil leak from near the Vanos solenoid area on the the engine. I wonder if this is the infamous seal issue that is affecting , there is a slight feeling of loss of power at low rpms, but no error codes.
I have the 650i N62B48 engine. My values for engine roughness are all below 1, no more than 0.7. Your cylinder 7 seems higher than the others.
Possible coil breaking down? You could swap number 7 for another and see if the problem follows the coil. People always forget to check the coil end cap to spark plug contact for corrosion, which could result in a weak spark.
Did you get to the bottom of the TEV valve error? The remedy is often to remove and clean with carb cleaner.
I have a question, my camshaft adaption values don't change when I rev the engine. Do your values stay fixed when revving?
I have a small oil leak from near the Vanos solenoid area on the the engine. I wonder if this is the infamous seal issue that is affecting , there is a slight feeling of loss of power at low rpms, but no error codes.
Did you ever find out the problem that made the RPM needle jump?