R56 Sudden misfire
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#2
#3
Mine started doing it yesterday, cylinder 2 only. It wasn't throwing a code till it did it and I kept the accelerator to the floor. If I backed out of it, no code. When I stayed in it, it continued to miss then threw a code and went into limp mode. Checked the codes and cylinder #2 showed.
#4
#5
I had several multiple misfires (random) and so far it looks the Diverter Valve was the problem( S R56 model). If bad, avoids the extra boost to be returned to the compressor inlet, affecting the air/fuel mixture giving misfire codes and putting the car in a kind of "safe mode" with 4000 rpm limit. No engine light.
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shipjumper
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10-08-2018 06:25 AM