How to adjust Duty Cycle at 2.500 RPM - 300 CE 91?

[StephFR]

I've no problem adjusting my duty cycle at idle following the procedure linked here on this site, but my duty cycle at 2.500 rpm is way off (20 to 30 %).

How to adjust it? I remember earing something playing with the adjusting screw located on the EHA valve?

Can someone detail me the process (direction of adjustment) to adjust it.

Thanks.

[jhodg5ck]

Yes, after 2500 your A/F ratio can only be set via the EHA. Remove the EHA, remove the flat head screw and turn the 2.5mm hex 1-1/2 flat @ a time.

I'd strongly recommend you have another O2 bung installed and use a 5 wire O2 and A/F meter to set your #'s.

Jonathan

[StephFR]

Thanks for the info.

What's the direction of adjustment of this screw: CW do what to duty cycle at 2.500 rpm?

O2, EHA, injectors, ign coil/wires/plugs have just been changed (all of this were bad).

[jhodg5ck]

Sorry..forgot that critical bit...:-P Clockwise (right) for rich, counter (left) for lean..

Jonathan