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

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Old Jul 29, 2014 | 12:05 AM
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Brokencummins's Avatar
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Ran my cummins out of fuel. I was bleeding the injectors lines and it would spit and spudded couldn't get to run long. I was priming it more and then I got a weird noise in the motor and seems like it is turning over really free. I crank it over my fan spins. It sounds like the start and hitting the flywheel all the way but I no it is cause it's turning over but not running. Any help???
 
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Old Jul 29, 2014 | 06:46 AM
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so it you hear the starter spinning but not engageing into the flywheel? just a free spin?
 
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Old Jul 29, 2014 | 10:05 AM
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If i read the gibberish right, he is saying it turns over but it is like it has no compression, spins free. he knows the starter is engaging as the fan spins when he cranks it.
 
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Old Jul 29, 2014 | 11:03 AM
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Originally Posted by dezeldoc
If i read the gibberish right, he is saying it turns over but it is like it has no compression, spins free. he knows the starter is engaging as the fan spins when he cranks it.
oh I see


When you were bleading the injectors you took the line nut off correct? not the injector hold down I hope
 
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Old Jul 29, 2014 | 11:06 AM
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Originally Posted by 94 12valve
oh I see


When you were bleading the injectors you took the line nut off correct? not the injector hold down I hope


Chris
 
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Old Jul 29, 2014 | 02:55 PM
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Yeah, loosning the returns would be a bad deal too, I always bleed mine @ the pump, usually fires quickly ...
 
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Old Jul 29, 2014 | 03:50 PM
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Originally Posted by dezeldoc
If i read the gibberish right, he is saying it turns over but it is like it has no compression, spins free. he knows the starter is engaging as the fan spins when he cranks it.
Yea that was what I was trying to say it seem like it's just free spinning and it's pumping fuel but making a weird noise
 
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Old Jul 29, 2014 | 03:55 PM
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Originally Posted by 4x4manonbroke
Yeah, loosning the returns would be a bad deal too, I always bleed mine @ the pump, usually fires quickly ...
I was doing my the big lines. I didn't prime it off the ones on the bottom
 
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Old Jul 29, 2014 | 03:57 PM
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Originally Posted by xzaq103


Chris
Yes the line nut not the injector itself
 
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Old Jul 29, 2014 | 04:40 PM
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Describe this weird noise it's making.

Why did you crack any lines? I've run mine out of fuel several times, and never had to crack a line or bleed anything to get it running again, just prime the LP by hand and go.
 
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