HPFP Life expectancy?
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Post Fiend
Joined: Jun 2003
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HPFP Life expectancy?
I'm not sure anyone has posed this question yet. So we can switch out an HPFP for a couple thousand. Doesn't that sound better that 9-13K? Of course it does. So the question is: when can we tell when it has neared it's useful life and about to dump a bunch of sparklies into our fuel system, forcing the much more expressive 'whole fuel system' replacement?
Super Moderator
Joined: Oct 2005
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From: SW Virginia
That's the thing.....I don't think there's any way to tell. From the few that have been reported, the mileage varies. Trying to come up with a definitive answer that pins down a specific age or mileage would be like being a blind man a hundred yards away from a dartboard trying to hit the bullseye.
Last edited by powerstroke72; May 6, 2013 at 08:52 PM.
Sick 'n Tired
Joined: May 2006
Posts: 2,969
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From: League City, TX
There's really no way to tell with the data available now as no trend seems to be evident. Its self lubed but it's also working at 29K psi. A small manufacturing imperfection could cause a failure at any moment at any mileage. I think those type failures and bad fuel related failures will be the real issue rather than mileage related failures.
Fleet Mechanic
Joined: Jun 2009
Posts: 1,346
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From: Connecticut
Wouldnt you have a better chance of hitting the lotto then having a hpfp failure? Seems like changing it just because is a complete waste of money.What percentage of pumps fail due to non operator error?Very few to say the least.I have two buddies who arent on this forum and didnt have a clue as to hpfp failures.They drive their truck and work it hard and dont worry about anything failing.
Junior User
Joined: Feb 2013
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From: Lone Star State
F250/350's dominant this part of Texas. I see five F250/350's to every 1 Dodge/Chevy. Says a lot in my opinion.
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Posting Guru
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I see so many 6.7 work trucks everyday, I'm sure most have never heard of the hpfp and its failures and never used additives and buy the cheapest diesel they can find. Most I've met
Don't even know to drain the water bowl.
Don't even know to drain the water bowl.
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Junior User
Joined: Nov 2012
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From: Saskatchewan
You'd really be kicking your self if you replaced it with a faulty one from new, and yes it does happen. I like the idea though, but I am not even worrying about it yet, maybe once warrentys off I will but clean fuel is the answer, and we run enough fuel through our tanks I am not too worried about it .
Senior User
Joined: Feb 2007
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From: Colorado
oh no,The chart
Refer to Bosch's chart. US diesel is 520HFRR. Add some good lubricity additives and you might end up at 470HFRR (I use a 50/50 mix off Stanadyne lubricity formula and Performance formula, 3 Oz per 20 gallons gets 460 HFRR + / -. Best we do under ideal conditions is 2000 hours with a little wear. So drain your DFCM, add good additives that increase lubricity, then pray.
Cargo Master
Joined: Jul 2008
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Something I have thought about, and I'm sure a lot of others have as well, is why would the pump be designed for a higher standard of fuel than what is commercially available? That just sounds like a recipe for disaster.
I know that doesn't answer the OP's question, but the posted chart brought that up in my mind again.
I know that doesn't answer the OP's question, but the posted chart brought that up in my mind again.
Posting Guru
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Junior User
Joined: Jun 2006
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Refer to Bosch's chart. US diesel is 520HFRR. Add some good lubricity additives and you might end up at 470HFRR (I use a 50/50 mix off Stanadyne lubricity formula and Performance formula, 3 Oz per 20 gallons gets 460 HFRR + / -. Best we do under ideal conditions is 2000 hours with a little wear. So drain your DFCM, add good additives that increase lubricity, then pray.
Diesel Fuel Lube ? Save Money on Your Opti-lube Order
Senior User
Joined: Feb 2007
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From: Colorado
I think that chart is great and shows that we need good fuel, but I think that was made in 2007? It is all we have.
I feel like a broken record trying to help people out. But... The TDI Club has a group buy on Optilube. Since the MSRP is fixed on Optilube, Diesel Fuel Lube cut the shipping down to $4.75 on as many gallons as you want of the same product. They also have free shipping on 5 gallon pails. This is all I have used in my diesels since 2007 and its been great. THANK YOU, Just bought a 5 Gallon pail, but I do love trusted Stanadyne. Thanks for the HFRR summary chart link, I have never seen that.
Diesel Fuel Lube ? Save Money on Your Opti-lube Order
I feel like a broken record trying to help people out. But... The TDI Club has a group buy on Optilube. Since the MSRP is fixed on Optilube, Diesel Fuel Lube cut the shipping down to $4.75 on as many gallons as you want of the same product. They also have free shipping on 5 gallon pails. This is all I have used in my diesels since 2007 and its been great.
THANK YOU, Just bought a 5 Gallon pail, but I do love trusted Stanadyne. Thanks for the HFRR summary chart link, I have never seen that.Diesel Fuel Lube ? Save Money on Your Opti-lube Order
The Bosch CP4.2 is used on so many European vehicles where fuel is of good quality, they also pay $5.82 a gallon on average. The Duramax uses the same pump we have. So Bosch put a "Diamond Like Coating" on the fuel pump cam and valves for US fuel. Have seen speculation here and elsewhere that additives might destroy the DLC. Remember the Army ran JP8 through the 6.7 for their test at 800 + HFRR and it showed little wear. It is futile to worry about what part will fail when. But preforming routine maint extends the life of stuff. There is no shortage of articles and pictures of the bosch pump. After reading most of that and distilling down, if I asked the designer of the pump what could I do to get the most life out of it, the reply would be to use European or Canadian fuel, or drain the DFCM, use a good lubricity additive in each tank (only pennies per gallon) etc. Mike