Nissan Largo Friends

What do you mean hammer mod the quantit adjuster?
Just been into garage, he's going to put some EGR cleaner through the system to see if that helps
What is the best way/ easiest way to code read the system?

EGR cleaner not worked too well, so going to take the valve of and give it a clean next.
What's the best way to do an engine management reading?
What Could jumpy/lumpy idling be, and any ideas to sort it would be fantastic?
Thanks

See ecu procedures and code in help section,that what its there for it tells you how to do it