Have many questions on diesels but. What is the range of fuel/air mixture of diesels is it 24/64 to 1. If the initial idle fueling was to remain the same what RPM would it turn too lean and not want to run anymore? How are the electronic 24v compensating for this? or are they? Does anyone speak Polish out there who could help me please?

 

I don't know the exact range, but what you quoted sounds right for "nonsmoking" mixture ratios. I assume you're talking about an overrunning situation when you talk about the idle fueling? In that case the engine is being helped along by the driveline and will not stall out. Even if actual combustion stops, the governor will catch it before it stalls once you slow down.

In playing with the idle and main fuel settings on my truck I've had it idling as slow as 350 rpm. It's very rough and unstable, but it runs.

The only Polish I know is "Mowimy po Polska" , which is kind of a lie since that's all I know.