What are signs of a bad CP3 injection pump? - Dodge Cummins Diesel Forum
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Old 05-03-2009, 02:17 PM   #1 (permalink)
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What are signs of a bad CP3 injection pump?

I'm just curious as to what are some of the signs of having a bad CP3? I just purchased a Arson III kit for my CP3 and want to make sure all is well before I install.
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Old 05-03-2009, 04:34 PM   #2 (permalink)
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low rail presure.. hard starts.. pretty much the same signs as a faulty injector from what ive seen whats your RP at WOT / IDLE / and CRUISING
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Old 01-13-2010, 06:40 AM   #3 (permalink)
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what is rail presure at idle? Mine is 5100-5200 This low?
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Old 01-13-2010, 07:11 AM   #4 (permalink)
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what is rail presure at idle? Mine is 5100-5200 This low?
alittle, i think at idle it should be like 5700-5900 with no programmer.
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Old 01-13-2010, 09:20 AM   #5 (permalink)
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what is rail presure at idle? Mine is 5100-5200 This low?
That's close. The cold weather may change it a little as well.
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Old 01-13-2010, 10:29 PM   #6 (permalink)
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how do you guys check your rail pressure?
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Old 01-13-2010, 11:00 PM   #7 (permalink)
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Yea....I'm curious, how can I find out what my rail pressure is, and how can I monitor it?
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Old 01-13-2010, 11:05 PM   #8 (permalink)
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RP gauge.. electric device that will connect to your RP sensor and go into your cab.. diprocal / isspro has them.. ect ect.. im sure more will im not saying anything about anyones products just naming a few that have them
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