5.9 Liter CR Dodge Cummins 03-07 Discussion of 5.9 Liter Dodge Cummins Diesels with Common Rail Injection

Pressure Relief Valve

Old Mar 30, 2009 | 12:18 AM
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Default Pressure Relief Valve

ok got a prob buddies pressure relief valve is shot. should we go straight to cummins for a replacement or any way to reset the valve??
 
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Old Mar 30, 2009 | 12:28 AM
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is it the fprv for the rail?
 
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Old Mar 30, 2009 | 12:39 AM
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ya, unless i can figure out something tonight we are gonna drive up to cummins first thing in the morning
 
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Old Mar 30, 2009 | 12:43 AM
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some people tap the inside of the banjo bolt and plug it with a steel plug, is it leaking on you or its popped open all the time and not letting rou hold rp?
 
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Old Mar 30, 2009 | 12:50 AM
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well they tapped it and plugged it but it shot the plug out from what i was told. i havent seen the truck yet. he ran it at the track yesterday and borrowed a smarty and on his 2nd pass down the track it popped he said
 
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Old Mar 30, 2009 | 01:01 AM
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hmm, its the banjo bolt not re-usable?

is this what he did to his banjo bolt?
https://www.dieselbombers.com/5-9-li...fuel-rail.html

https://www.dieselbombers.com/5-9-li...re-relief.html
 
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Old Mar 30, 2009 | 01:21 AM
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i have no clue i havent even seen it yet. i am kinda anxious to take a look at it though
 
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Old Mar 30, 2009 | 01:38 AM
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some pics would be nice
 
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Old Mar 30, 2009 | 01:47 AM
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well i dont have a camera here unfortunately im home on leave ill try to find one though and post em up
 
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Old Sep 24, 2010 | 12:09 PM
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Default Relief valve

Hi

Could some of you CR experts give me a hand or better yet, your knowledge? The CR pressure relief valve has a history of failure. I have been looking on the web for a few days to find out why.
This is what I've heard. (1) The spring weakens and looses its force (2) The seat and poppet become etched (3) The poppet tip breaks off
What have you guys experienced? Have you done any testing on the CR relief valve?

Thanks for helping me out.
Rob
 
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