Should a diesel smoke?
 

Should a diesel smoke? I mean like a little puff not a mile of thick black smoke. I have been in aurguments with people that say a truck should not smoke, I think a truck should so that way you that you arent starving your pump with fuel. What is your guy's take on this?

if your truck doesnt puff at least a lil smoke, then YEA ITS GOT A HEMI LOL

Mine does not smoke at all.

technicially no, it shouldnt...if it is tuned right there should very little if any smoke, this is why banks says his stuff is tuned so good. he just happens not to tell you that they are pushing enough nitrous thru the dang thing that it could make all of china start laughing. and is why he will never build a pulling truck because he cant make enough "clean power" to compete with the other pullers.

But if you have the right fuel to air mixture your truck should not smoke. even though you would think that if its not smoking you not properly lubrictaiting your fuel system...you have to remember that only about 30% of the fuel being pumped from your tank is being used to fire the engine the rest is used for lube and cooling and pumped back into your tank via the return line

Yeah I agree that there be very little smoke. Yeah I know that not all of the fuel is firing the engine.

the banks motor is tuned not to smoke even with out the nitrous too

That I did not know, thank you for that info.
(Not trying to sound sarcastic, I really didn't know)

There is definitely a law of diminishing returns in effect when it comes to injecting more fuel, which a lot of people don't seem to understand. Added fuel makes more power and more smoke, because no injection system burns all of the fuel it injects.

Let us take a stock engine. It makes no smoke at all. We put injectors into it that are 20% larger than stock, and that increases power a lot and smoke a little. Then we put in injectors that are 50% bigger than stock. Based on the 20% larger injectors, the 50%'ers increase power a lot and smoke a lot. Then we put in injectors that are 80% bigger than stock. Compared to the 50%'ers, the 80%'ers make only a little bit more power but tons of smoke. Any bigger injectors we go than that, are going to make way more smoke but only a little bit more power, or can actually start dropping the power level.

Engines start making smoke before they stop getting power from added fuel. An engine, even one with as efficient an injection system as a common rail, is going to be making more power slightly smoky than it is smokeless. A general rule of thumb is that the voluminous gray-tinged smoke is what you get when you got the fuel quantity just right.

The first little haze you get is definitely not a sign that you have too much fuel, are exceeding the stoichiometric point, and won't benefit from any more added fuel.

nothing wrong with a little smoke. just unburnt fuel. :5:

blending smoking white, or smoking black
 

Your air fuel mixture is off.
White smoke is too much air.
Black smoke is too much fuel.

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