12 Valve 2nd Gen Dodge Cummins 94-98 Discussion of 12 Valve 5.9 Liter Dodge Cummins Diesels with P7100 Injection Pumps

Lots of smoke / what size injectors

Old Feb 18, 2012 | 09:13 PM
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Default Lots of smoke / what size injectors

I have too much smoke coming from my truck all of the time even at an idle and horrible MPG. It didnt smoke when I got it but the person I purchased it from had done several mods. I also want to know what size injectors I have ( Link to the injectors Nozzle DLLA155P665 0 433 171 484-Nozzle,Plunger,Rotor Head,Diesel Injection,Common Rail Nozzle,Unit Pump ) the number on the injectors is - DLLA155P665 How do I check my turbo?
 
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Old Feb 18, 2012 | 10:03 PM
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some more information about the truck is going to be needed before were going to be able to help you

the link you sent is just for the nozzle i'm sure they have been EDM'd larger
 
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Old Feb 19, 2012 | 05:41 AM
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Its a 98 12v with a schwitzer aftermarket turbo (dont know what size), #6 fuel plate, boost elbow, built trans, 4.56 gears w/315's, adjustable OFV, and DLLA155P655 NOZZLES. I just want less smoke. I have adjusted the smoke screw all the way out the fuel plate is in the middle of the screw holes. The star wheel is not turned all the way its about 3/4 inch back, and the afc is pushed back. Detuned as much as I know how.
 

Last edited by kwebb412; Feb 19, 2012 at 05:45 AM.
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Old Feb 19, 2012 | 07:13 AM
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how much boost are you seeing?
 
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Old Feb 19, 2012 | 07:22 AM
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0 until about 1800 rpm and once I put my foot in it about 30-35 psi.
 
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Old Feb 19, 2012 | 07:38 AM
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you have a big turbo. i bet your truck is fast as hell once you start seeing boost and i also bet the smoke clears up after 1800 rpms???? you have no idea what your turbo is?
 

Last edited by turbo2332; Feb 19, 2012 at 08:04 AM.
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Old Feb 19, 2012 | 08:01 AM
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I jsut managed to get a picture of the only numbers I could find. Yes this truck moves when the turbo kicks in. I sometimes have to let off the peddle to keep the EGT's down. and the smoke clears up mostly when I put my foot in about 1/2 way, but I get a black cloud when I open it up fully.
 
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Old Feb 19, 2012 | 08:07 AM
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ther eshould be a tag on the center section that says like s3?? and are you running the stock air box/filter? if so loose that thing it was taking about 5 psi away from me and adding bunches of smoke.
 
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Old Feb 19, 2012 | 08:13 AM
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Yes S300G071 174480 - I do have a K&N Filter box and filter.
 
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Old Feb 19, 2012 | 08:58 AM
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Hmm. you have a super B same as i do. mine isnt laggy at all. nearly identical to stock it spools way sooner than 1800rpms.

57/65/14 is your turbo unless the compressor wheel and housing have been upgraded.

you bout have to have a boost leak... only thing i can think of that discribes the laggyness too.
 
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