Z3M strange engine sound

Z3Mroadster

Zorg Addict
Joined
Nov 24, 2013
Points
50
Hello!Engine S50B32
I was cleaning ICV valve and throttles and after that my engine have higher idle(950)and strange sound from top engine on 1500 rpm(similar as when no valve adjusted)...And in ride on 2000 I hear some misfire in 2nd gear...
Power is okay...Only I see a little higher fuel consumption...
I was check lambda okay,but have too much HC in exhaust...77ppm in idle and 44 on rpm...

What is potential problem?
 
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