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

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Old 02-03-2011, 07:19 PM
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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
 
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Old 02-03-2011, 07:29 PM
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Old 02-03-2011, 07:39 PM
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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
 
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Old 02-03-2011, 08:16 PM
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Hmmmmmmmmmm Im adding more fuel and putting out way more smoke but Im getting worse mileage?

 
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Old 02-03-2011, 08:39 PM
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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
 
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Old 02-03-2011, 11:17 PM
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Chicks don't dig smoke.
 
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Old 02-03-2011, 11:39 PM
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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
 
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Old 02-04-2011, 12:31 PM
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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
 
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Old 02-04-2011, 12:58 PM
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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
 
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Old 02-04-2011, 01:05 PM
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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
 


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