I adjusted my fuel pump last weekend and turned it clockwise just over one flat.
The truck never smoked black at all before I turned it up and now it still doesnt even give a whiff of black or grey smoke.
The truck had a new IP when I got it and I was wondering if the mechanic had it set too low when he installed it.
I have to put my foot in the floor to get it to pop off and it still doesnt blow black at startup like any other diesel from the unburnt fuel in the cold combustion chamber.
With the IP set so low does it hurt fuel mileage or make it hard to start becuase of not enough fuel?

 

The cold engine will put out white smoke from unburnt fuel.
If you drive the truck after it is warm, when you put your foot on the floor under acceleration is when you should see the black smoke. You want just a little black, not huge clouds.

 

i had to turn a buddie's truck up 1/2 a turn just to make a little smoke. when i turned my pump up 1/2 a turn, damn!!! i guess the guy that rebuilt my pump turned it up alredy. but my truck didn't smoke not one little bit before i turned it up. i dunno, all the pumps are set different i would imagine. turn it up some more if you wanna smoke. or advance the timing. when you put your foot to the floor to start it, you are slowing the timing down which aids in starting a little. advance the pump a hare and see if it makes some smoke.

 

I'm sure you guys know it, but any pump turnup is preceeded by a Pyro installation or thermal meltdown is inevitable......

 

i got mine 2/3 a turn up right now and i even had a turbo with 15 psi boost and i never got the ol' gal hot. the only time i had a pyro hooked up is when i had a turbo and i never got it over 1200 pre turbo. i held it there as long as you would ever want to empty and never got it hot. i would like to hear a few testimonials of thermal meltdowns before i believe that it would ever actually get that hot. i have tried to get a 7.3 hot and it never happened. i even had my timing off one time and she got hottern' firecracker, pegged the guage when it was full of water, and it didn't hurt the ol gal. drove it about 15 miles like that, white smoke solid and turned up about 2 flats. from all my experiences, i have never had a problem. thats just my opinion. i run my truck up to 4,000 rpm's daily as well. 15,000 miles turned up and twisting 4,000 rpm's.... these motors are a lot tougher than people give them credit for. my truck still runs like a champ. i pull trailers about 15,000 lbs worth easy to 60-65 alot with it like that. no problems here. and i have never heard anyone in here tell a story about a meltdown. maybe my trucks a lot tougher than ya'lls, but i know it's seen a much harder 330,000 miles than most of ya'lls trucks in here. it's even got 4.10's and don't burn any oil to speak of. leaks like crazy, but don't burn it. bottom end never been touched in that truck.

 

In case you all are wondering, 1200 pre-turbo or whatever is way to ****ing hot!

 

my 96 freightliner with a 500 cat will run 1200 all day long at 32 psi boost. after turbo.

 

You mean Daddy's truck, a Fruit-can no less!?

And... no it won't!

 

fruit can's ***, gross 120,000 plus all the time, drag 110 foot long concrete beams grossing 210,000 lbs in 17 gear, 70-75 mph. from corpus to dallas 2X a day for 3 months straight. 675,000 miles and don't burn a drop of oil. motor has never been touched besides change oil-filters. and a fuel pump once. 1200 all day long, after turbo.guess you guy's just don't get it. buncha panty waists. the dodge-cummins guys run their trucks up to 15- 18-even 2,000 degrees daily, granted not for very long at a time, but their trucks hold together.

 

I cant see how putting some extra fuel in the engine is going to inevitably melt it up. Maybe if you do stuff like 89Ford7.3 it will burn up but if you ever look at his gallery you will understand why he does what he does. I would too if I had a badass truck like his.
When you going to put some propane on that thing Lowman? Are all the trucks in texas like that? Up here in IL you would get pulled over just becuase it looks suspicios and smokes too much.

I turned up my pump again so now it is 1/4 turn more than stock and it doesnt even let a hint of grey smoke.

 

timing, timing, timing, it's all in the timing, you can turn white smoke to black smoke and black smoke to white smoke and even no smoke to black or white smoke, all with the timing, chances are that your fuel rack is a little worn out "they all wear over time" and when they wear, it slows(or retards) the timing and with retarded timing, it will not smoke black, and will lose a few horses to boot. it's not gunna be magic, but you'r butt dyno will notice a difference. and you will be happy to see the smoke also. you can do it by ear, thst get it to where it clatters at idle, but not a lot a lot just to start clattering lus about 1/16 inch or so. the pump actually retards the timing when you step on the go pedal and it slows the timing down, but when the pump wears, it's just too much. adjust it back up to normal timing and you will love yourself. and the freight-ey don't make no smoke, but it runs plenty good enough w/o it, any more and there would surely be a risk of smoking u-joints or rear ends. any motor than can drag 210,000 lbs with 675,000 on it at 70-75 mph is a damn good motor. can't do that on a hot day though, it will blow the tires out.

 

dieseldan, my truck is a one-of-a-kind here in texas, you & me need to go to the track and line up someday... i'd be interested in seeing how your truck runs against mine, the only difference is single cab and 4x4. i have never raced another diesel with 4.10's since they are such an uncommon combo. many people think they have 4.10's when they really have 3.55's but we won't get into another argument about that. last one got pretty hot.