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

lost power

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Old Dec 23, 2009 | 06:35 PM
  #1  
H Bomb's Avatar
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Default lost power

put my 366 spring in yesterday and im only running 28 pounds of boost now it was 32 pounds i turned fuel screw all the way, in any ideas
 
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Old Dec 23, 2009 | 07:25 PM
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Alwaysworking's Avatar
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From: keizer Oregon
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indexed the throttle wrong?
 
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Old Dec 23, 2009 | 07:46 PM
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Originally Posted by Alwaysworking
indexed the throttle wrong?
Thats would be my guess, how is the idle?
 
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Old Dec 23, 2009 | 08:01 PM
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i didnt look at notches when i tore it down, so when i put it back together it tried run away four times then i hit the right one, it idles good, i just took the high idle screw off yesterday so i figured that would give it a lil more but i dont know, i really miss those four pounds though,
 
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Old Dec 23, 2009 | 09:12 PM
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Check the spring and corresponding levers from the fuel pin.Did you remove the fuel screw when you put it back together?
 
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Old Dec 23, 2009 | 09:54 PM
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Mine lost a lil bit of smoke when I did the spring in it but I never looked into it all that much cuz the boost wa about the same and the truck would run better than it ever has.
 
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Old Dec 25, 2009 | 11:58 PM
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yea i would have to go with the throttle index is off, i had more boost after i put my 3200 gov spring in.....
 
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Old Nov 22, 2010 | 12:20 AM
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u have to adjust full throttle and you should time it too do the starr wheel
 
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Old Nov 22, 2010 | 11:16 AM
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Levi Miller's Avatar
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mine did the same its prolly the wsrong index mark
 
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