6.5 diesel need smoke

[chevy68388]

need to know how to make a 1994 6.5 smoke like a train u guys know black just like coal. its for a friend i know on a dodge there is a star nut u can turn

[RockHQ]

Why would he want to do that? I don't see the point in deliberately polluting the atmosphere. It's possible to bump up the fuel injection a bit which makes a little more power but most of it goes to waste in the form of the black smoke (soot, ie. unburned fuel).

[chevy68388]

yea i know its prolly not the best thing in the world to do but he likes it also turning up his fuel pump would cost way to much

[RockHQ]

Turning up the high pressure injection pump is how it's done. There are web pages that have the required information how it's done (i think The Dieselpage is one), but i wouldn't try it without prior experience. I worked for a company that rebuilds injection pumps and injectors and the only way we did any mods to injection pumps was running them on a test bench so we could measure the exact amount of injected fuel per each cycle.