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6.7 Super Duty Maintenence/Mods

YotaAtieToo said:
Isn't bumper to bumper only like 30k miles?

My exhaust temp code apparently fixed itself. But the mechanic found a Def quality and Def level sensor code. Then I read a throttle position sensor code :homer:

He said in his experience when these newer diesels hit 180k, they start shifting out all the sensors. Mine has 173k :homer::laughing: Luckily he's very reasonable on his rates. I may just have him change the sensors and install the dpk.
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The good news is that Forscan can help you pin down bad sensors and replace them yourself too. Most are pretty easy to replace and readily available.

I picked up Insite for diagnostic work on my Cummins MDT trucks and it’s paid for itself on simple sensor swaps pretty much immediately.
 
Snowy said:
The good news is that Forscan can help you pin down bad sensors and replace them yourself too. Most are pretty easy to replace and readily available.

I picked up Insite for diagnostic work on my Cummins MDT trucks and it’s paid for itself on simple sensor swaps pretty much immediately.
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I bought the stuff for foreskin, just haven't set it up yet.

I was going to do the exhaust myself, but dropping the Def tank sounds like a pain, so I'll pay the $250 to save the frustration. Haven't looked into the throttle position sensor yet.
 
YotaAtieToo said:
Isn't bumper to bumper only like 30k miles?

My exhaust temp code apparently fixed itself. But the mechanic found a Def quality and Def level sensor code. Then I read a throttle position sensor code :homer:

He said in his experience when these newer diesels hit 180k, they start shifting out all the sensors. Mine has 173k :homer::laughing: Luckily he's very reasonable on his rates. I may just have him change the sensors and install the dpk.
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Previous owner paid for the 100k warranty. Pretty much the main reason I was willing to get this new of a diesel. But dealing with warranty is obnoxious, so it’s a double edge sword.

That would suck, but if it’s just plug and play replacing sensors that doesn’t sound too bad.
 
Snowy said:
The good news is that Forscan can help you pin down bad sensors and replace them yourself too. Most are pretty easy to replace and readily available.

I picked up Insite for diagnostic work on my Cummins MDT trucks and it’s paid for itself on simple sensor swaps pretty much immediately.
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I bought a cheap laptop that I keep in the truck with forscan. The thought is if it ever gives me issues on a road trip I could hopefully sort it out. But I haven’t spent much time messing with the diagnostic features of forscan, just doing some changes in the programming.
 
SLOWPOKE693 you get your DCR pump installed and/or have you heard any other feedback? I've been watching from the sidelines on them to see how they are holding up long term. It's brutally hard these days to sift through social media (FB) to find real feedback.
 
Snowy said:
SLOWPOKE693 you get your DCR pump installed and/or have you heard any other feedback? I've been watching from the sidelines on them to see how they are holding up long term. It's brutally hard these days to sift through social media (FB) to find real feedback.
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Nope, I haven't even opened the box but I really need to get it installed sooner than later.
 
CarterKraft said:
I just realized there is another pump, the CPX.
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For a long time I thought I was going to go with the CPX. Everything you read makes it look great. Just like every other latest and greatest thing.
The biggest advantages where built in disaster kit. Pinned pistons. And being 100% brand new.

But that was also my fear with the DCR pump, everyone was saying it is the greatest thing ever.

So you ask, really? How many miles is on yours?

Oh well they are not out yet.

Yeah a bunch of hype bs. Can't believe anything.
 
CarterKraft said:
Well if it fixes the inherit problem it might not be as bad of a pump and being a direct swap would be beneficial In my mind.
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The DCR is a direct swap as well so that is a non-issue. The pins that hold the roller lifters can still shit out and let the lifters grind themselves to death filling the fuel system with glitter just like the CP4 does because that pump is a garbage design.
 
Tiha said:
For a long time I thought I was going to go with the CPX. Everything you read makes it look great. Just like every other latest and greatest thing.
The biggest advantages where built in disaster kit. Pinned pistons. And being 100% brand new.

But that was also my fear with the DCR pump, everyone was saying it is the greatest thing ever.

So you ask, really? How many miles is on yours?

Oh well they are not out yet.

Yeah a bunch of hype bs. Can't believe anything.
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Yeah it's still a little smoke and mirrors. It's good slowpoke actually has one but id prefee miles on the odometer instead of years on the shelf lol.

I am not even considering changing mine @ 7k miles now in 15 months but I'd like to be mentally prepared in case something dumb happens.
 
SLOWPOKE693 said:
The DCR is a direct swap as well so that is a non-issue. The pins that hold the roller lifters can still shit out and let the lifters grind themselves to death filling the fuel system with glitter just like the CP4 does because that pump is a garbage design.
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I thought there was a adapter plate deal, my bad if not. I guess it doesn't matter much, you could still pull the adapter and install a cp4 if needed.
 
Tiha said:
For a long time I thought I was going to go with the CPX. Everything you read makes it look great. Just like every other latest and greatest thing.
The biggest advantages where built in disaster kit. Pinned pistons. And being 100% brand new.

But that was also my fear with the DCR pump, everyone was saying it is the greatest thing ever.

So you ask, really? How many miles is on yours?

Oh well they are not out yet.

Yeah a bunch of hype bs. Can't believe anything.
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I haven't heard a bad thing about a DCR pump yet and lots of guys on different Ford forums have them installed on their 6.7s. Same with the Ford FB groups. Other than "I installed it and didn't notice a single difference other than it may possibly start .000125 seconds faster when it's cold" comments I take no news as good news.
 
CarterKraft said:
Yeah it's still a little smoke and mirrors. It's good slowpoke actually has one but id prefee miles on the odometer instead of years on the shelf lol.

I am not even considering changing mine @ 7k miles now in 15 months but I'd like to be mentally prepared in case something dumb happens.
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through all the hype I went with a motorcraft reman. The first one I got was bad out of the box. But second one was fine.

Only thing I regret, I think I would have rather bought a brand new bosch then a motorcraft reman.
 
SLOWPOKE693 said:
I haven't heard a bad thing about a DCR pump yet and lots of guys on different Ford forums have them installed on their 6.7s. Same with the Ford FB groups. Other than "I installed it and didn't notice a single difference other than it may possibly start .000125 seconds faster when it's cold" comments I take no news as good news.
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And I hope that is the case.

I was just commenting on it being so hard to believe what you hear about anything. When I did my CP4 the DCR was on pre order and not available. I cannot count how many times I was told that they are the best ever and I need to get it yet not one person commenting had ever seen one let alone run it. That would impossible, they were just spewing the advertising crap they saw.

I think the only person or persons didn't tell me to get the DCR told me to get the cpx and there is a thread on this forum right now about a failed cpx.
 
SLOWPOKE693 said:
Nope, I haven't even opened the box but I really need to get it installed sooner than later.
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Curious to hear your feedback. I'm on one of the FB pages as well, some guys stacking miles up but I've not seen anyone with 100+k. I'm extremely skeptical of all the marketing hype but if it does turn out to work well, I'd be happy to spend my money on one.
 
Snowy said:
Curious to hear your feedback. I'm on one of the FB pages as well, some guys stacking miles up but I've not seen anyone with 100+k. I'm extremely skeptical of all the marketing hype but if it does turn out to work well, I'd be happy to spend my money on one.
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At some point you just got to make a decision based off the information you have. Call me a fanboy or parrot or whatever…

Not knocking RCD, I don’t know them at all and I’m sure the owner is a very talented guy…But I know who I would trust my money with on my 6.7

Steel mill guy?
EC577F17-A0DE-4338-9356-789A2F058D81.png



Or a group of guys who have specific knowledge and training at the OEM level of how to design and develop OEM level solutions specific to common rail high pressure diesel injection systems?
AEF9F847-D193-4B13-AB63-F969712D6F0C.png

2D208415-BEE2-4AF4-AA61-5961BA55A680.png
 
fl0w3n said:
At some point you just got to make a decision based off the information you have. Call me a fanboy or parrot or whatever…

Not knocking RCD, I don’t know them at all and I’m sure the owner is a very talented guy…But I know who I would trust my money with on my 6.7

Steel mill guy?

Or a group of guys who have specific knowledge and training at the OEM level of how to design and develop OEM level solutions specific to common rail high pressure diesel injection systems?
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ok Here is the problem with that.

I am sure whoever designed the DCR pump setup, great guy, intelligent. All that stuff, along with whoever designed the CPX and all the other great ideas out there.

Problem is from design to profitable production and sale. What gets cut?

Remember when the duramax first came out in the pickup? They said the greatest engine ever, blah blah, millions of miles of test data.

But a production change swapped heads from the cast iron used in all the test data to aluminum heads for production. Now this greatest engine ever is popping head gaskets like candy.

Not the engineers fault. He designed it with cast iron heads. But somewhere along the line someone decided they could save some time or money and did not follow the original plan or design.

The DCR pump Or CPX pump could be the greatest thing ever, but maybe they realized to build the pump they designed it would cost $10k per pump.
Who is going to spend that?
So now they cut corners to get the price point comparable to others.
Now all the test data was made using that $10k pump but we get the $2k version.

Yep I have trust issues when it comes to parts suppliers.
 
Tiha said:
ok Here is the problem with that.

I am sure whoever designed the DCR pump setup, great guy, intelligent. All that stuff, along with whoever designed the CPX and all the other great ideas out there.

Problem is from design to profitable production and sale. What gets cut?

Remember when the duramax first came out in the pickup? They said the greatest engine ever, blah blah, millions of miles of test data.

But a production change swapped heads from the cast iron used in all the test data to aluminum heads for production. Now this greatest engine ever is popping head gaskets like candy.

Not the engineers fault. He designed it with cast iron heads. But somewhere along the line someone decided they could save some time or money and did not follow the original plan or design.

The DCR pump Or CPX pump could be the greatest thing ever, but maybe they realized to build the pump they designed it would cost $10k per pump.
Who is going to spend that?
So now they cut corners to get the price point comparable to others.
Now all the test data was made using that $10k pump but we get the $2k version.

Yep I have trust issues when it comes to parts suppliers.
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I agree 100%. I trust no one selling me something. Real world experience and data is what really matters.

The aftermarket diesel world also has a terrible reputation for putting out engineered to a price point, or non-engineered parts. It is encouraging that they do have some ex-Cummins guys though.

I put very little stock in someone's credibility just because they worked in a steel mill too. Definitely one of the worst places/industries I've ever dealt with when I was in Northwest Indiana and was at Mittal/US/Nucor pretty much every day trying to sort through their clusterfucks of an operation.
 
The DCR pump was not engineered by some random company or guy.

The dcr pump is used worldwide in oem applications by an oem supplier that has been setup to work on a 6.7.

I’m not saying it’s the solution but wanted to make sure I mentioned that it isn’t some random pump put to market after 12,000 test miles
 
Tiha said:
ok Here is the problem with that.

I am sure whoever designed the DCR pump setup, great guy, intelligent. All that stuff, along with whoever designed the CPX and all the other great ideas out there.

Problem is from design to profitable production and sale. What gets cut?

Remember when the duramax first came out in the pickup? They said the greatest engine ever, blah blah, millions of miles of test data.

But a production change swapped heads from the cast iron used in all the test data to aluminum heads for production. Now this greatest engine ever is popping head gaskets like candy.

Not the engineers fault. He designed it with cast iron heads. But somewhere along the line someone decided they could save some time or money and did not follow the original plan or design.

The DCR pump Or CPX pump could be the greatest thing ever, but maybe they realized to build the pump they designed it would cost $10k per pump.
Who is going to spend that?
So now they cut corners to get the price point comparable to others.
Now all the test data was made using that $10k pump but we get the $2k version.

Yep I have trust issues when it comes to parts suppliers.
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So, the only solution is walk barefoot :flipoff2:

Can’t trust the boots either, so good luck.

Seriously though, as a 3x Duramax owner and a 2x 6.7 owner I think you’re over sensationalizing internet drama.

I haven’t had any issues in my 5 personal cases, so does that mean you all the sudden trust the duramax and the 6.7? Or are you only going to count the negative info you hear?

Head gaskets popping like candy? How many exactly is that? Can I see your spreadsheet that compares popped head gaskets to non-popped head gaskets?
 
I have no skin in the game but have y’all seen this thread?

irate4x4.com

RCD CPX--high pressure fuel pump disaster

Good afternoon all. Anybody out there have experience with your high pressure fuel pump splitting literally in half? Causes? I had this happen. I have my high pressure fuel pump go out replaced it with a aftermarket CPX. No other aftermarket changes and fuel system or engine. Engine ran perfect...
irate4x4.com irate4x4.com
 
06h3 said:
The DCR pump was not engineered by some random company or guy.

The dcr pump is used worldwide in oem applications by an oem supplier that has been setup to work on a 6.7.

I’m not saying it’s the solution but wanted to make sure I mentioned that it isn’t some random pump put to market after 12,000 test miles
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Genuinely curious what OEM on-highway applications?

The timing process for the DCR pump sucks. Allegedly they are changing it, but timing the pump by eye with a press fit non-keyed gear seems pretty bush league to me.

DCR.png


Guys are having issues with significant chatter noise from what seems like mis-timed pumps but no one seems to know for sure yet. Some are getting warrantied out and the replacement pump doesn't make noise. S&S has been responsive to their credit for guys with problems. The pump also requires a fuel table relearn from Forscan or else guys are having CEL issues after install. Which is fine, but just include that in the instructions.
 
fl0w3n said:
So, the only solution is walk barefoot :flipoff2:

Can’t trust the boots either, so good luck.

Seriously though, as a 3x Duramax owner and a 2x 6.7 owner I think you’re over sensationalizing internet drama.

I haven’t had any issues in my 5 personal cases, so does that mean you all the sudden trust the duramax and the 6.7? Or are you only going to count the negative info you hear?

Head gaskets popping like candy? How many exactly is that? Can I see your spreadsheet that compares popped head gaskets to non-popped head gaskets?
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Dude, I was there doing the head gaskets.

Are you butt hurt from what I said? Or from using the box of dildos that come with every GM product?

I am a diesel mechanic I have owned and or worked on every light duty diesel and most heavy duty diesels since the 5.7 that came out in 1978.

The duramax head swap was just an easy example of design and testing vs production.

Just like the 6.0 In an IH truck very little trouble and was a well proven engine, but move stuff around, like lowering the coolant overflow tank to fit under the hood of a pickup and that actually created bigger problems than anyone imagined which was not how it was designed.

Ironic that you are accusing me of buying into the internet hype and that is exactly what I am railing against. DCR is all internet hype right now. that is all it can be. Hasn't been out long enough for real world experience.

I am glad you have had good experiences with your duramax, I have a friend with a 6.0 ford that is over 350k miles now untouched.

Advertising is the internet drama.
 
Tiha said:
Dude, I was there doing the head gaskets.

Are you butt hurt from what I said? Or from using the box of dildos that come with every GM product?

I am a diesel mechanic I have owned and or worked on every light duty diesel and most heavy duty diesels since the 5.7 that came out in 1978.

The duramax head swap was just an easy example of design and testing vs production.

Just like the 6.0 In an IH truck very little trouble and was a well proven engine, but move stuff around, like lowering the coolant overflow tank to fit under the hood of a pickup and that actually created bigger problems than anyone imagined which was not how it was designed.

Ironic that you are accusing me of buying into the internet hype and that is exactly what I am railing against. DCR is all internet hype right now. that is all it can be. Hasn't been out long enough for real world experience.

I am glad you have had good experiences with your duramax, I have a friend with a 6.0 ford that is over 350k miles now untouched.

Advertising is the internet drama.
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Damnit if I knew the new duramaxs came with a box of dildos I wouldn’t have got this Ford :flipoff2:

My point is… so what’s your suggestion… all I am hearing is the world is fucked, we can’t trust engineers, we can’t trust OEMs, we can’t trust internet

How many successful DCRs do you need to see to be happy and sold? How many miles? Who needs to report it to you?
 
fl0w3n said:
Damnit if I knew the new duramaxs came with a box of dildos I wouldn’t have got this Ford :flipoff2:

My point is… so what’s your suggestion… all I am hearing is the world is fucked, we can’t trust engineers, we can’t trust OEMs, we can’t trust internet

How many successful DCRs do you need to see to be happy and sold? How many miles? Who needs to report it to you?
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At least 10-15 non sponsored installations over 100k is my threshold of comfortability.

All I've seen so far is a few hot shot guys up to 30-40k.
 
Snowy said:
At least 10-15 non sponsored installations over 100k is my threshold of comfortability.

All I've seen so far is a few hot shot guys up to 30-40k.
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Fair enough.

You think we’ll ever really see that though?

Like Tiha is pointing out, all we hear about is all the head gaskets that blew on duramax… and apparently those numbers drown out the millions of others that didn’t have issue.


Edit: How would you feel if your CP4 blows with only 5-7 100k samples so you didn’t buy a DCR yet and then you replace with a CP4 because there’s not enough samples and then later while you’re on your second CP4 you see 10-15 100k samples :flipoff2:
 
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