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

Truck won't run

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Old Sep 8, 2011 | 06:23 PM
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Neibe's Avatar
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Default Truck won't run

So here is what happened i started my truck up this morning and it ran rough but then it smoothed out. Went 100 feet down the road and died. Cranked it over finally got it started and got it off the road. Fuel gauge was on e put in 10 gallons pushed priming bulb several times cranked it over got it to start held pedal down ran a few seconds then died. Any ideas?
 
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Old Sep 8, 2011 | 06:25 PM
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Did you bleed the fuel lines?
 
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Old Sep 8, 2011 | 06:39 PM
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I tried searching on here but I couldn't find how to do it. I loosened one of the lines on top of the injection pump pushed the priming bulb and no fuel came out also loosened the line on top of the injector and on fuel pushed priming bulb til i could hear a hissing. I clearly don't know what I'm doing.
 
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Old Sep 8, 2011 | 07:34 PM
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tighten lines on inject pump.... fill the fuel filter full of fuel then put it back on. crack injections lines one at a time on injector side. once u see fuel spit out...tighten it and go onto the next one...she will start
 
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Old Sep 9, 2011 | 04:11 AM
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can i push the prime bulb to push the fuel or do i have to crank the starter?
 
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Old Sep 9, 2011 | 06:23 AM
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Did you get 'er goin?
 
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Old Sep 9, 2011 | 05:25 PM
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fill the fuel filter up manuelly... i find it to work alot better.

---AutoMerged DoublePost---

and prime the bulb.....i had to prime mine when i did my fuel lines atleast 100 times
 

Last edited by monster12valve; Sep 9, 2011 at 05:25 PM. Reason: Automerged Doublepost
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Old Sep 10, 2011 | 03:24 PM
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I changed my fuel filter truck wont start fuel is leaking out around the top of the cannister
its a 98 12v dodge cummins what should i do ?
 

Last edited by roll coal in cummins; Sep 10, 2011 at 03:26 PM.
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Old Sep 10, 2011 | 04:43 PM
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u dont have to prime (imo) just crack the lines like he said tighten them once fuel comes out and try to start it like that.

---AutoMerged DoublePost---

Originally Posted by roll coal in cummins
I changed my fuel filter truck wont start fuel is leaking out around the top of the cannister
its a 98 12v dodge cummins what should i do ?
did u make sure the seal is seated? if not it wont have pressure and leak. take it back off check it real good and make sure its not cross threaded
 

Last edited by blazier18; Sep 10, 2011 at 04:43 PM. Reason: Automerged Doublepost
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Old Sep 10, 2011 | 04:48 PM
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Default Re: Truck won't run

Remove fuel heater & replace rubber lines and remove fuel filter and check sealing surface?
 
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