engine running rich-black smoke

[oddysea1]

This is a 1999 mercruiser magnum fuel injected-burning black smoke runs rough-injectors were replaced-Any other components that may have to be addressed? Thank you Andy

 

[Rick Stephens]

Injectors replaced to solve the smoke problem?

Only other things I can think of are a scrambled ECM or a fuel pump producing lots more pressure than normal.

 

[alldodge]

Tell us more about when this started.
Is this a new to you boat?
What is the serial number?
Have you check fuel pressure?
What other test have been done?

 

[oddysea1]

Fixed most of issue replaced fuel pump regulator-Thank you for your time much appreciated-Regards Andy