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  Topic Review (Newest First)
12-19-2019 07:29 AM
72guy #1
I bought the caps and tether from Geno’s and they look and work great

https://www.genosgarage.com/product/...5glc/fuel-caps

https://www.genosgarage.com/product/...gdef/fuel-caps

https://www.genosgarage.com/product/...ther/fuel-caps




Quote:
Originally Posted by sdowney717 View Post
I put a locking fuel cap on the tank. I was actually worried some hooligan kid would dump water, or something in the tank especially as I park on the street, though its a nice neighborhood 10 years ago we had cars up and down the street get their glass broken.
If you want to ruin someone's diesel, just put gasolene in the tank. When I was a teen, I knew some kids who did torment some other kid's parents houses and cars, they can do bad stuff like that without a conscience.

Other advantage, the locking cap is green, it slows people filling up at the gas station which make them actually think more about the process of putting diesel in the tank. I let my family borrow the truck and don't want them misfueling it by accident.
12-19-2019 06:52 AM
sdowney717
Quote:
Originally Posted by crazyrunner33 View Post
Save your fuel receipts as well(I'd keep the last couple months). They typically test the fuel if there's a failure and might claim misfueling. Your last few receipts will prove that wrong and turn it into a fight between the dealer and fuel stop.

I've mentioned it often in this thread, I know a lot of people who had early generation VW(known to be problematic) CP4 pumps, including myself and never had or heard of an issue outside of the forums. We know that water is the enemy and water separation was a big focus on the newer 6.7s. Drain that water separator and you'll be fine.
I put a locking fuel cap on the tank. I was actually worried some hooligan kid would dump water, or something in the tank especially as I park on the street, though its a nice neighborhood 10 years ago we had cars up and down the street get their glass broken.
If you want to ruin someone's diesel, just put gasolene in the tank. When I was a teen, I knew some kids who did torment some other kid's parents houses and cars, they can do bad stuff like that without a conscience.

Other advantage, the locking cap is green, it slows people filling up at the gas station which make them actually think more about the process of putting diesel in the tank. I let my family borrow the truck and don't want them misfueling it by accident.
12-17-2019 10:37 PM
crazyrunner33 Save your fuel receipts as well(I'd keep the last couple months). They typically test the fuel if there's a failure and might claim misfueling. Your last few receipts will prove that wrong and turn it into a fight between the dealer and fuel stop.

I've mentioned it often in this thread, I know a lot of people who had early generation VW(known to be problematic) CP4 pumps, including myself and never had or heard of an issue outside of the forums. We know that water is the enemy and water separation was a big focus on the newer 6.7s. Drain that water separator and you'll be fine.
12-17-2019 08:51 PM
xj1514
Quote:
Originally Posted by troverman View Post
It's going to be just fine. There are hundreds of thousands of 2011- current Ford Super Duty diesels on the road with the same pump and they aren't all blowing up. Same with the 2011-2016 Duramaxes.

A few failures here and there, no different than anything. Just enjoy enjoy your new truck; you'll like it.

Best precautions you can do are make sure you use quality diesel form a high volume station; change your filters in a timely manner, and perhaps drain your water separator once a month or so if you are really concerned.
The fuzzy feeling is coming back. Thanks
Solid advice. My last two i serviced the filters myself, but i may go to the dealer for them on this one just for the service records.
12-17-2019 02:37 PM
7492
Quote:
Originally Posted by xj1514 View Post
Going to pick up my 19’ tomorrow and stumbled across this thread. After skimming and reading all 20 pages, am I correct no forum members with 2019 HD trucks have had a failure, but there has been two seen first hand at the dealership?

Its got me a little scared, and wondering maybe I should get some “extra” insurance from my insurance agent in the form of mechanical breakdown insurance.

Not sure I would go so far as to back out of the deal as it seams the 20’s have the same injection pump.

Someone hug me and make me feel all warm and fuzzy.
If something like this forum scares you, you probably don't want a Ram.

12-17-2019 12:36 PM
dieselenthusiast
Quote:
Originally Posted by xj1514 View Post
Going to pick up my 19’ tomorrow and stumbled across this thread. After skimming and reading all 20 pages, am I correct no forum members with 2019 HD trucks have had a failure, but there has been two seen first hand at the dealership?

Its got me a little scared, and wondering maybe I should get some “extra” insurance from my insurance agent in the form of mechanical breakdown insurance.

Not sure I would go so far as to back out of the deal as it seams the 20’s have the same injection pump.

Someone hug me and make me feel all warm and fuzzy.
So far, there has been no CP4 failures posted on this forum. Unless someone has firsthand knowledge, I'm not counting hearsay. The only thing I would add to troverman's comment regarding lubrication is the use of biodiesel. Depending on what state you are in, there's a chance that biodiesel is already in the fuel. Many states have laws that require a minimum of B2 or B5 in the fuel. If that is the state law, then the fueling stations are not required to advertise biodiesel in their fuel. Point is, B2 outperforms every aftermarket fuel additive on the market in regards to lubrication. So, if possible, fill with B2 or B5.

Also, check with your insurance regarding contaminated fuel. My comprehensive insurance covers contaminated diesel fuel. I had my insurance lady put that in writing. She said the insurance company will go after the fueling station, therefore it is recommended that you keep receipts. I have an envelope in the console that holds all my fuel receipts.

This was mentioned earlier, but there is a hotshot on the Ecodiesel forum who has over 630,000 miles on his factory CP4 pump.
12-17-2019 11:33 AM
troverman
Quote:
Originally Posted by xj1514 View Post
Going to pick up my 19’ tomorrow and stumbled across this thread. After skimming and reading all 20 pages, am I correct no forum members with 2019 HD trucks have had a failure, but there has been two seen first hand at the dealership?

Its got me a little scared, and wondering maybe I should get some “extra” insurance from my insurance agent in the form of mechanical breakdown insurance.

Not sure I would go so far as to back out of the deal as it seams the 20’s have the same injection pump.

Someone hug me and make me feel all warm and fuzzy.
It's going to be just fine. There are hundreds of thousands of 2011- current Ford Super Duty diesels on the road with the same pump and they aren't all blowing up. Same with the 2011-2016 Duramaxes.

A few failures here and there, no different than anything. Just enjoy enjoy your new truck; you'll like it.

Best precautions you can do are make sure you use quality diesel form a high volume station; change your filters in a timely manner, and perhaps drain your water separator once a month or so if you are really concerned.
12-17-2019 11:16 AM
xj1514 Going to pick up my 19’ tomorrow and stumbled across this thread. After skimming and reading all 20 pages, am I correct no forum members with 2019 HD trucks have had a failure, but there has been two seen first hand at the dealership?

Its got me a little scared, and wondering maybe I should get some “extra” insurance from my insurance agent in the form of mechanical breakdown insurance.

Not sure I would go so far as to back out of the deal as it seams the 20’s have the same injection pump.

Someone hug me and make me feel all warm and fuzzy.
12-13-2019 12:14 PM
crazyrunner33
Quote:
Originally Posted by 10%more View Post
There is a guy on the Ram 1500 Ecodiesel forum that has 630,000 miles on his CP4. To my knowledge there has been a failure or two. "Failure or two" is not a major issue.

Of course the rest of that engine package has serious problems but the CP4 used is not one of them.
That's similar to what's being seen on the 2015 and newer TDI engines and 2012 and newer Passat TDI.

Even on the problematic gen 1 CR TDI engines, the failure rate was significantly lower than the VP44. Around 5 of my coworkers and some of my family members had the older gen 1 TDI with not a single CP4 failure. But my cousin and I both had VP44 failures. On the forums, the failure rate of the older TDI appeared to be below 3 percent.
12-11-2019 08:33 AM
10%more There is a guy on the Ram 1500 Ecodiesel forum that has 630,000 miles on his CP4. To my knowledge there has been a failure or two. "Failure or two" is not a major issue.

Of course the rest of that engine package has serious problems but the CP4 used is not one of them.
12-11-2019 04:11 AM
sdowney717
Quote:
Originally Posted by crazyrunner33 View Post
Europe doesn't have issues with the CP4 not because of lubrication, but fuel quality. The TDIs have had the high rate failures for the CP4, but only in the US. Pump builders who play a lot with those engines have noted that CP4 failures correlated with rust in the injectors, water is what killed them.

As one of the pump builders noted, they believe the CP3 is a downgrade to the CP4(people are swapping to the CP3 on TDIs), but the loose tolerances on the CP3 allows for water to pass through without issue. From what they've seen, you just need a good water separator and the white bottle of diesel purge (the anti gel additives combat water).

It's worth noting that the industrial version of the new ISB is using the CP3. Some suspect that Dodge wanted to save a few dollars and run the CP4, but it's my understanding that it's more expensive to make the CP4. If you're concerned about getting water in your fuel, stick with a CP3 truck. Otherwise, service your water separator religiously and add the white power service bottle if you have any hesitation about that cheap fuel station you found.

It's worth noting that the same builder I've mentioned as seen no failures on the older CP4 pumps when using the white bottle of power service. Another part manager for a VW shop has noted that they haven't seen any CP4 pumps on the 2015 model year. VW worked out the kinks on these things 4 years ago and Cummins had a chance to watch others fail long before that and test it out on the V8.
They make the move to CP4 as it can be made to pump higher fuel line pressures, which improve efficiency and pollution numbers, which they care more about than lifespan or the eventual system wide engine destruction. I suppose they make a judgement that the pump on most engines will last till the warranty runs out, then its no longer their problem. And they can always blame the consumer for using dirty fuel or lack of maintenance.

You get metal in an injector and it can jamb open and flood the engine with excess fuel, that can destroy it completely so that you need a new engine.

Yes our USA diesel is lousy garbage fuel compared to what the EU has mandated. A lot of troubles would never happen if the lubricity had been required to be better, and that is something that could easily be done, and they know that too, but don't care enough to do much. And if the diesel engine makers admitted the USA diesel was not good enough, that would crush consumer confidence in buying any of their diesel engines, so they wont dare tell anyone US diesel is not good enough to use as is. Not designing an engine that can run reliably over a long time on the available fuel is what they have done.

You can have super clean diesel fuel, but if it has bad lubricity numbers, it is going to let the metal parts rub and then self destruct.
12-11-2019 03:05 AM
RFairbairn Glad I decided to read up on the 19's before selling my 12' and getting a new one. After watching that comparison video, I have to say anyone with any manufacturing and or engineering experience is shaking their head at the cp4 design. Let's take a basically bullet proof, well designed pc, the cp3 and let these rookie engineers redesign it and we'll go with their first idea. What a joke. I'll wait for the retrofit before buying a 19' or newer. Maybe this is why the delay on the 2020's ?
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