5.9L 12V Performance Discussion of 12 Valve 5.9 Liter Dodge Cummins Diesels with P7100 Injection Pumps Related to Performance and Longevity

changing injectors

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Old Feb 3, 2010 | 07:34 PM
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Default changing injectors

any special tricks? i have to bleed them after i change them or any thing?
 
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Old Feb 3, 2010 | 08:09 PM
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after you get them changed and tightened back up just loosen #1 fuel supply line and crank over until it spits fuel tighten it up and work your way down the line probably wont try to start until youve done 3or4
 
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Old Feb 3, 2010 | 09:05 PM
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so you crack the line and then pump the fuel primer?
 
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Old Feb 3, 2010 | 09:25 PM
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mine usually fires right up without bleedin lines
 
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Old Feb 3, 2010 | 09:42 PM
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could air get stuck in the system if u dont or it just blow out
 
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Old Feb 3, 2010 | 11:11 PM
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you can pump the primer or crank it over either way will work and like captain stabbin says they have been known to start too without priming them
 
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Old Feb 4, 2010 | 05:59 AM
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Originally Posted by bowtech
any special tricks? i have to bleed them after i change them or any thing?
change the washers out even if they look good. The injectors have a button on the side make sure it drops in the slot in the head before you tighten them down. If the injector gets stuck go buy a nut that fits over the threads and use a pair of vicegrips to get it out.
 
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Old Feb 4, 2010 | 10:39 AM
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Actually....
If he cuts a short piece of electrical conduit pipe(just long enough that it fits between the head and midway up the injector) and uses a factory lug nut flipped over he can pull the injectors out very easily.Cheapest injector puller one can ever have and it makes removing number 6 a breeze.......Andy
 
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Old Feb 4, 2010 | 01:14 PM
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Originally Posted by Hammer
Actually....
If he cuts a short piece of electrical conduit pipe(just long enough that it fits between the head and midway up the injector) and uses a factory lug nut flipped over he can pull the injectors out very easily.Cheapest injector puller one can ever have and it makes removing number 6 a breeze.......Andy
thats good advice, I've never had to use a puller with mine ( guess I have been lucky), normally I use a nut and a vicegrip and they come right out. I'll have to try this next injector go arround
 
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Old Feb 4, 2010 | 07:30 PM
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do i have to take off a bunch of stuff like all the fuel line holders or just take off the top nut on the injector?
 
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