Z4 coupe 3.0 rough idling

[Eugene Baiden]

I’ve been experiencing rough idling, I have checked with a scanner but no code came up, help please

 

[t-tony]

Which 3.0 engine does your car have Eugene? M54 or N52?

Tony.

 

[NZ00Z3]

With the scanner, have a look at the 4 fuel trims. Short term and Long term for each bank. Record them and post them in this threads so we can help you.

 

[Maurits K]

And to fill in for Eugene: it will be the N52B30, as Eugene is talking Z4 coupe.

 

[Lee]

With the N52 start with Maf and vanos Solenoids. Try unplugging the MAF and try cleaning the solenoids.