DPK; Does it work?
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Cross-Country
Joined: May 2022
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DPK; Does it work?
So I'm posting this because I have been dying to know; Has ANYBODY installed a Disaster Prevention Kit and then had their CP4 go out? And more importantly did it work like it was supposed to?
With 2 6.7's well past the 200k mile mark, and some recent posts on here, Im starting to wonder if its not a bad idea to do. and its not like having one on will cause MORE damage, Im mainly curious if they work. Because based off what Ive seen, Im not sure how they can.
With 2 6.7's well past the 200k mile mark, and some recent posts on here, Im starting to wonder if its not a bad idea to do. and its not like having one on will cause MORE damage, Im mainly curious if they work. Because based off what Ive seen, Im not sure how they can.
Lead Driver
Joined: May 2021
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From: Uh oh, CA
I am about 7500 miles into my first diesel, and I have wanted one since before I got it. And I don't see how it wouldn't work. It won't keep the CP4 from blowing up (which it doesn't claim to), but it will keep all the debris from when/if it does explode from contaminating the rest of the fuel system. The DPK's goal is to minimize the loses, so instead of 12k or more to replace the entire fuel system, or the entire engine, you will only be out the cost of the CP4 and another DPK. The only reason I haven't picked one up is because I am still nervous about installing it... and it's not that it looks hard, but it's just a lot of stuff to take off and I'd be afraid that I would forget something when putting it all back together! lol.
(And I like you username!)
(And I like you username!)
Laughing Gas
Joined: Dec 2016
Posts: 781
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From: Knightstown Indiana
My CP4 went 335k on my 2016 before it grenaded about 2 weeks ago. Absolutely no warning. I hadn’t used additives except for gelling when it got COLD, so I don’t feel I did too bad. There was no water in the fuel either.
Not sure if the DPK helps, I’m hoping someone chimes in.
Not sure if the DPK helps, I’m hoping someone chimes in.
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Cross-Country
Joined: May 2022
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Right, their name IS kind of misleading. They're more like Disaster Mitigation Kits
my question is mainly if these DMK'S have actually saved anybodys injectors yet. Not that it matters, most of us preach proactiveness and preventative maintenance anyway and it sounds to me like the DMK's fall right into that category. Time to start shopping around.
my question is mainly if these DMK'S have actually saved anybodys injectors yet. Not that it matters, most of us preach proactiveness and preventative maintenance anyway and it sounds to me like the DMK's fall right into that category. Time to start shopping around.
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Cargo Master
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I think they're called disaster prevention kits because that's what S&S decided to call them years ago when first introduced. The real disaster though is the design of the CP4, and it's too late to prevent that. Best way to keep it from failing is to use lubricity additives.
That said, I installed an S&S kit because it was $400 and if it prevents fuel system contamination it will save a minimum of $9000 in repair costs. I think CP4 failures aren't as common as some would lead you to believe, so I haven't seen any examples where someone had a CP4 failure with the DPK in-place. Having studied the design I don't see how it wouldn't do what it claims to do.
That said, I installed an S&S kit because it was $400 and if it prevents fuel system contamination it will save a minimum of $9000 in repair costs. I think CP4 failures aren't as common as some would lead you to believe, so I haven't seen any examples where someone had a CP4 failure with the DPK in-place. Having studied the design I don't see how it wouldn't do what it claims to do.
Hotshot
Joined: Jul 2013
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there’s a thread floating around on this forum in which we studied the design of the gen1 kits before the gen2 kits.
at that time there were in fact product reviews on various sites of folks saying they bother the kit and the entire system was destroyed anyway.
i wanted to know how this was possible and studied the design of the components of the gen1 kits.
in short, what was learned is that on a gen1 kit, the distance that separates fuel to the injectors can fuel to the bearings was less than 1 inch. This results in a buildup of particles that backfill this short distance and then the particles go directly to the injectors.
S&S agreed that under a large particle influx that this was possible….but not likely….and by the way, we are working on a gen2 kit that addresses everything in your comments.
so in a gen2 kit, this distance has increased to over 12” and there is not enough bearing material to backfill the passageway ….and…to ensure this problem does not occur on a gen2 kit, there is a return path filter. 2 microns with S@S .
there is only one choice when buying a DPK, the S&S gen2 kit.
Cargo Master
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@speakerfritz I remember that thread and posting in it. Indeed the gen1 kit design had a flaw. Then gen2 kit addressed it. My comment was regarding the gen2 kit from S&S and no other kit from them or anyone else. I should have been more clear I suppose.
Hotshot
Joined: Jul 2013
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But that's the question, do they actually do what they claim to do? There seems to always be a debate on the effectiveness of the DPK's depending on the manufacturer, the size of the screens they use and the ability for shrapnel to backfeed down the line and get to the injectors anyways. I'm in the same boat as chadstickpoindexter, first diesel, done some preventative stuff but haven't gone down the path of a DPK and not sure I ever will.
Fleet Mechanic
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