1st Generation Dodge Cummins 89-93 Discussion of 12 Valve 5.9 Liter Dodge Cummins Diesels with Rotary Injection Pumps

Read before messing with full fuel screw

Thread Tools
 
Search this Thread
 
Old Feb 3, 2011 | 07:19 PM
  #1  
1st genny nut's Avatar
Thread Starter
|
Diesel Enthusiast
Joined: Nov 2009
Posts: 251
Likes: 4
From: Murphy, NC
Default Read before messing with full fuel screw

Hey guys,
As you can see in my sig i have done some slight mods to the truck 91.5. So i thought it would be cool to turn up my truck about a turn or so and turn down the star-wheel and the smoke screwand turned the fuel cone to the deepest setting. I added a new turbo and 4" exhaust hoping the mph's would even out. Wow i was wrong. Im just a teen driving this truck and for me the smoke was awesome, i loved smoking other people at interseections and all the others diesels in my town couldn't even touch my smoke out-put. The whole time i thought i was getting great fuel mileage but i was wrong again. Turning the pump up just as much as i did gave me around 14-15 mpg. Not good and i have about a 20 mile commute both ways to wendys almost everyday.

So all in all if you wanna keep your 20-24 mpg then dont mess with the fuel settings.

thanks Tony
 
Reply
Old Feb 3, 2011 | 07:29 PM
  #2  
jeffandjess4806's Avatar
Diesel Fan
Joined: Nov 2010
Posts: 52
Likes: 1
From: Springport
Default

 
Reply
Old Feb 3, 2011 | 07:39 PM
  #3  
1st genny nut's Avatar
Thread Starter
|
Diesel Enthusiast
Joined: Nov 2009
Posts: 251
Likes: 4
From: Murphy, NC
Default

yeah man but ever since ive turned everythiing back stock....i went back and forth to work for 5 days on little under a 1/4 tank so im happy
 
Reply
Old Feb 3, 2011 | 08:16 PM
  #4  
EasternAggie's Avatar
Diesel Bomber
Joined: Jul 2010
Posts: 2,139
Likes: 107
From: Broken Bow, Oklahoma
Default

Hmmmmmmmmmm Im adding more fuel and putting out way more smoke but Im getting worse mileage?

 
Reply
Old Feb 3, 2011 | 08:39 PM
  #5  
1stGen1990's Avatar
Diesel Enthusiast
Joined: Mar 2010
Posts: 139
Likes: 4
From: Powell Butte, Oregon
Default

i get better with mine turned up if i keep my foot outta it, but when i lay down the smoke i expect my mileage to drop
 
Reply
Old Feb 3, 2011 | 11:17 PM
  #6  
BC847's Avatar
Diesel Enthusiast
Joined: Nov 2008
Posts: 438
Likes: 108
From: In an old bus, down
Default

Chicks don't dig smoke.
 
Reply
Old Feb 3, 2011 | 11:39 PM
  #7  
2500HeavyDuty's Avatar
Super Moderator
Joined: Oct 2007
Posts: 14,872
Likes: 764
From: Houston, Tx
Default

Originally Posted by BC847
Chicks don't dig smoke.

a lot of them dont even care what you have done to truck either



the best way to get better mileage is to keep you foot out of the thing
 
Reply
Old Feb 4, 2011 | 12:31 PM
  #8  
EasternAggie's Avatar
Diesel Bomber
Joined: Jul 2010
Posts: 2,139
Likes: 107
From: Broken Bow, Oklahoma
Default

Originally Posted by BC847
Chicks don't dig smoke.
What kind of girls do yall have round where you live?

Granted not every girl round here drops their pants when they see black smoke, but there is a good crowd of em that do
 
Reply
Old Feb 4, 2011 | 12:58 PM
  #9  
1STGENFARMBOY's Avatar
Diesel Enthusiast
Joined: Jul 2010
Posts: 234
Likes: 39
From: Pittsburg ILL
Default

Got some real classy gals there do ya.

I would blow as much black smoke as i could...

that way it will speed up the clean air laws and we can park our trucks for good.

Darwin
 
Reply
Old Feb 4, 2011 | 01:05 PM
  #10  
white93's Avatar
Diesel Wrench
Joined: Apr 2010
Posts: 510
Likes: 32
From: Texas Panhandle
Default

Originally Posted by 1stGen1990
i get better with mine turned up if i keep my foot outta it, but when i lay down the smoke i expect my mileage to drop
Mine gets better mileage turned up too, unless im towing then I get really bad because of the big injectors. That sure hurts the wallet
 
Reply



All times are GMT -5. The time now is 01:28 AM.