HPFP proactive replacement interval ?

[Rotorfixer]

Hi Guys,

As soon as my truck is off warranty (should be around 130,000 km) I will be pulling the cab off myself to remove the entire EGR system, DPF system, add an airdog and mini max tuner (stock power with EGR and DPF delete).

My question is, while I have the cab off, I can buy a brand new HPFP for under $1100, that seems like cheap insurance to me. I am viewing the HPFP as like a timing belt on a small car, not worth the risk of waiting for it to fail.

When do you guys think would be a good time to change out the HPFP and or the injectors on this engine?

Do you believe the injectors pose a risk to let them fail before replacement? i.e. hydraulic lock, scorching etc.?

Thanks for your input!

[superduty6.4]

Just out of curiousity how come you are planning to pull the cab for the egr and dpf delete?

[Doss]

Are you pulling the cab to remove these things only? If so, I don't think it's necessary. I would put some headstuds in while you're there though.

Isn't there a system to combine with the AirDog to replace the fuel pump system altogether? Or maybe with FASS.

There's a point where proactive maintenance can introduce more problems or unnecessary expenses.

[Rotorfixer]

Obviously not for the DPF, but the EGR delete kit I want (RDP??) specifies cab off, I will need to weld stuff to my existing piping. There is a pre welded cab on kit but I will have a 2 post hoist in my home shop by then....

Pulling the cab seems like it isnt a really big deal to me, lets you do the job right, have a look around. I may also want to do my down (?) pipe as well, not sure if there is a big incentive to do that or not.

[Rotorfixer]

Are headstuds necessary on these trucks if I just run stock power? I didn't think they were?

You can remove the HFCM (low pressure pump and filter) if you want to with an air dog, might just leave it for now though.

Oh, and I don't think the HPFP is unjustified for pre mature replacement. I'm going to say 90% of the $12,000 to $20,000 repair stories on here are HPFP failures.....

If you change it out early, $1,100 (pump only). If you wait till it blows $6,000 (pump and all injectors) to $20,000 (pump, all injectors and short block) if you do the work yourself.

[Doss]

There is no guarantee that the new pump won't fail in short order though. That's the problem. I'm not saying that what you're doing is crazy; it's just not something I would do just to do. If you're going through all the trouble to replace the HPFP, I'd probably look into replacing it with a [higher quality] aftermarket set up and not the OEM again.

That seems like a lot to delete an EGR. I think the current kits out there are adequate especially with a wastegate added.

Headstuds are not necessary, but you have to pull the cab to put them on. If you already have the cab off, you might as well upgrade them. I mean, you're doing all this other stuff to bulletproof your engine. This is just one more weak link eliminated.

You can swap downpipes now with the cab on. You just have to cut the stocker.

[Rotorfixer]

Aftermarket or higher quality HPFP ???

As far as I know there is no such thing. There is a dragon fire pump but that is just a stock pump modified for higher flow for ++ injectors.

[KPBJJ]

Subscribing

[Capt dong]

If you replace the fuel pump you also have to replace the lines since they are one time use only and all the associated hardware. Check with an online parts dealer like sunrise to price parts. It might be in your budget.

[blackcloud2k]

EGR delete can be done cab on. A wastegate is not needed if you are going to run stock power. Even running the truck tuned, you would be safe in most of the normal DD files. Studs can also be done cab on. There is a write up on powerstrokearmy I believe. I have it saved somewhere. I see you logic in preventative maintenance/replacement, but as with replacing anything before it fails, it could open up pandoras box if the replacement pump fails right away.