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

Bad Injector Pump?

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  #11  
Old 07-17-2016, 07:59 PM
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Originally Posted by crcavoto
Sorry meant to say pump has 3200 spring, I was going to upgrade the turbo with this but now I'm dealing with this so I don't want to start spending if I need a new pump, I'm going to remove them and throw my old one back in and see if my problem goes away
keep us posted...
 
  #12  
Old 07-18-2016, 10:20 AM
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You're saying bump the timing and see if it fixes my problem or put old injectors in and bump timing?
 
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Old 07-18-2016, 11:14 AM
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Originally Posted by crcavoto
You're saying bump the timing and see if it fixes my problem or put old injectors in and bump timing?
I personaly would put the old injectors in and see what happens.. bumping the timing will wake it up but you should not need to do that for it to run correct with new injectors..
 
  #14  
Old 07-26-2016, 09:53 AM
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If the injectors are spraying fuel into the cylinders, and it is not starting, it would be smoking white smoke out exhaust. When cranking with the accelerator pedal at WOT, are you getting any exhaust smoke?
 
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Old 07-30-2016, 07:18 PM
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Yes I'm getting white smoke when I try to turn it over, I actually got it running for a little but it's stopped and same problem now
 
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Old 07-30-2016, 07:36 PM
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The white smoke tells you it is getting fuel into the cylinders. However not enough heat (compression) or timing way off or the injectors are not atomizing (spraying) the fuel correctly. I would start with putting the old/original injectors back in, since that is when this all started to happen.
 
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Old 07-30-2016, 08:21 PM
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What would cause timing to all of a sudden be way off, honestly never had any problems until these new injectors, now I'm hoping they didn't damage something else, I'll try and get the old ones in tomorrow, any suggestions for new injectors?
 
  #18  
Old 07-30-2016, 08:30 PM
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I believe that is nothing better then original Cummins parts, but that doesn't fit into this site.
I don't think your timing went off, I was just mentioning that might be a reason for white smoke. I think something went wrong with those aftermarket injectors. It is a good cheap place to start the troubleshooting.
 
  #19  
Old 08-11-2016, 07:26 AM
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I'm having the same issues except injectors are stock. All that's done is Pump tuned. But been that way a while. Went from running to noting in the matter or 2 hours and never touched the motor. I have good compression can't see anything saying timing jumped the keyway for the pumps not sheared. Pummel and cleaned all the injectors I have fuel to the injectors im only get a little white smoke out the exaust when cranking it over. Any help is much ly appreciated.
 
  #20  
Old 08-20-2016, 09:30 AM
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stock pump ,big injectors mean low idle, you need to turn up the pump pressure,
 



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