2001 3.0 Z3 will not start sometimes on first key up.

[bnw]

Always starts instantly on 2nd try. I can always hear the fuel pump priming on either try. Runs beautifully. Occasional CEL for banks 1 and 2 lean. Always clears up on it's own. Any thoughts??

 

[OldFogey99]

following...

 

[Rudyrov]

Have you tried not starting the engine immediately, pause for a few seconds before you turn they key to engage the starter motor.

 

[bnw]

As of late, I have been waiting for the fuel pump to cycle before I attempt to start. Makes no difference

 

[Rudyrov]

Mine does what you describe off and on, if the engine is still warm its more first try, when its cold its usually 2nd try.
I have a 98 2.8L with about 140K miles.