International DT466 with a bit of an.....issue.

[spasm3]

So a lean condition fried the piston, Is that what happened?

 

[slammds15]

Nope, defective injector nozzle. Only one of the 6 orifices was allowing fuel through. Works like a water jet cutter when that happens.

 

[scurvy]

Originally Posted By: spasm3
So a lean condition fried the piston, Is that what happened?


No, when diesel nozzles stream or dribble, it will gleefully slice or melt through a piston. Diesels run stoichiometrically 'lean' all the time.

 

[Scienceman]

I love international, but I think the origional DT466's were the best. The DT466E's were pretty good, but as they get newer, and emissions more stupid, the engines get worse.

 

[Chris142]

Diesels and rich or lean mixtures are opposite a gas engine. A gas engine will run a long time if it's running too rich. A diesel will burn a piston in a few seconds if it's getting too much fuel.

A lean running gas engine will burn a piston quickly if running too lean. If a diesel is running lean then it's idling.

 

[rslifkin]

^ Yup. Running a diesel too rich makes lots of heat (and black smoke). If you take it too far, or an injector sprays too much fuel directly onto a piston, then things start melting.