My have things changed
Over 10 years ago when people posted their new truck HP figures people were coming back with posts like: "When is the HP madness going to stop." "This HP thing is out of of control, it's madness". "Wh...
Forum Discussion
ShinerBock wrote:
Nope. You still seem to be confusing gas with diesels. What do you think the black smoke coming from diesels is? Un-burned fuel. Why? Because it does not have enough air to burn said fuel. This is why old N/A diesel blew puffs of black smoke just about all the time and turbo diesels blew a puff off the line until the turbo was pushing enough air to burn all the fuel being added which only took a second. Adding more air does improve efficiency in a diesel because it is able to use the fuel to more efficiently use the same amount of fuel to make more power instead of blowing it out as black smoke..
And I still don't believe your story. Not only, that, but none of the guys in this(LINK) 7.3L forum even say that 16 mpg is normal and if you look at fuelly.com here(LINK) it is even less than that.
Black smoke means you are pushing the engine outside of it's limits. For a couple seconds under hard acceleration, it's not harmful but if it's continuous as you are cruising down a level freeway, you are overloaded and that will kill efficiency in any engine type. Only difference with gas engines is the unburnt fuel isn't visible under similar conditions.
Believe what you like, it was pretty consistent over a long period of time.
