CP4 Question

[Userwog]

Do you all think the CP4 would be fine to run with a fass lift pump and Opti-lube XPD additive, or do you think I should still do the CP3 retrofit?

I use it for work and will be putting roughly 100,000 miles/year on the truck.

Thanks in advance.

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[Chrisn162001]

I’ve had 8 pumps come apart at the dealership I work at. Most had 20k miles or less.

I don’t know if it’s a lube or pressure issue since the roller assembly turns in the pump.

I would probably convert to CP3 after warranty up.


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[Userwog]

OK thanks for the input. From the research I've done, it seems to be a lubrication issue due to the biodiesel we run over here in the States. Lubricating the CP4 with higher amounts of pressure along with a lubricity additive was my thinking on how to prolong the life of the CP4. Both of which I am already using but I also only have 7500 miles on the truck currently....oh and the warranty is already voided from installing the Fass system soooo.....yeah.

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[Gerald636]

Using an aftermarket part won’t void a vehicle warranty unless the dealer can prove that part caused the failure under the magnuson-moss act.


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[Badger2078]

Using an aftermarket part won’t void a vehicle warranty unless the dealer can prove that part caused the failure under the magnuson-moss act.


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Yup.

Had a dealer try to void one for aftermarket clutch when tranny went.

Didn't work for them cause of that Supreme Court case.

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[TexNeck]

PM Sent.

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[Userwog]

I hear ya, but it It was the extended warranty company that said it voided the warranty, not the dealership.

So I canceled it and got my $4k back.

I then called the dealer and asked them to clarify and they couldn't give me any definitive answers.

So I'm just going to precede as if it's voided and hope I don't need it!

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[SyN]

Eddie has had nothing but issues with his CP4 - I kind feel for this guy.







I will bet Eddie will eventually have to replace all 8 injectors on his own dime.

I am so thankful I bought my 17 Ram when I did.

If your doing a CP3 swap - do it early as you can - otherwise you might have to replace almost the whole fuel system itself in the end.

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[DIESELWRKS]

Do you all think the CP4 would be fine to run with a fass lift pump and Opti-lube XPD additive, or do you think I should still do the CP3 retrofit?

I use it for work and will be putting roughly 100,000 miles/year on the truck.

Thanks in advance.

fassride.com

Look up frequently asked questions.

They state their FASS pumps do not void warranty

As they meet cummins filtering specs.

So maybe contact FASS and see what more you can get from them.

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[Userwog]

Yeah, I saw that before I ordered it actually.

That was what gave me the confidence to go ahead and order it.

Then I had a gut feeling that I had better call the aftermarket warranty company and verify it.

I'm glad I did because they said it would in fact void the warranty on the fuel system and parts, if not all, of the engine as well so I canceled it.

Then it dawned on me that the FASS website said factory warranty, not aftermarket warranty so I called my dealership and spoke with the finance manager and even emailed him the link to their website to confirm it met or exceeded OEM specifications.

He tried getting answers for me, but no one could give him any definitive answers so I canceled my warranty.

I still have my factory bumper to bumper 36k mile warranty though and will fight it tooth and nail should I need to use it.

I'm deleting it and doing the CP3 retrofit as well, so hopefully it will be solid and not give me any issues.

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