Should a diesel smoke?
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?
BOMBARDIER
Joined: May 2008
Posts: 6,548
Likes: 279
From: New Holland Ohio
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
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
technicially no, it shouldnt...if it is tuned right there should very little if any smoke
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
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
Diesel Enthusiast
Joined: Jan 2009
Posts: 484
Likes: 34
From: Northern Ohio
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
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
(Not trying to sound sarcastic, I really didn't know)
Diesel Bomber
Joined: Mar 2007
Posts: 3,910
Likes: 335
From: Capo Beach, CA
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.
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.
