6.7 Ford fuel pumps

feddoc

Long Time Member
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Bosch CP4. POS pump. Ford, Chebby and Dodge (until 2021 model year) used them. Dodge started using a modified CP4, called a CP 3.3, pump sometime after the 2021 model year.


The problem could likely be caused by faulty design and inadequate testing. BOSCH, as most of you know, is a German firm. They make lots of good car parts. However, from what I can gather, Bosch did their testing in Europe where diesel has a higher lubricity that the ULSD in the US.

My dad got his 1931 Ford (I have it and the original title) and ever since then I (now that dad is dead) have bought nothing but Ford trucks. Two 6.9s, 4 7.3s, (no 6.0 or 6.4) and 3 6.7s. Fuel and oil filters changed every 5K. Never a problem with anythting....except...that POS fuel pump. Luckily they both died in my driveway.

Ford tried to sell me a loaded F450 at $10K over MSRP. Not gonna happen.

A local Ram dealer offered to order a 3500, loaded the way I want it, for invoice.
 
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Wow $10k over MSRP!!!!!!
I would like to get a new diesel pu before I retire, but don’t want DEF and I am worried about quality during these times. Wish you luck on what ever you decide.
 
Bosch says the much higher failure rate is due water and crap in US fuel . if you keep your filters changed at or before 15,000 miles the problems seem to all but go away.

GM and Dodge are recalling the CP4. Ford has said GFYS, but there is a lawsuit in progress so we'll see.

My new '22 has a CP4 so I don't see how Ford thinks they have any legal problems.
 
So What You Are Sayin is:

You Find A Way The Government Buys You A New KING RANCH Every Year & You Don't Have Them Long Enough To Have Any Problems With Them?

Bosch says the much higher failure rate is due water and crap in US fuel . if you keep your filters changed at or before 15,000 miles the problems seem to all but go away.

GM and Dodge are recalling the CP4. Ford has said GFYS, but there is a lawsuit in progress so we'll see.

My new '22 has a CP4 so I don't see how Ford thinks they have any legal problems.
 
Bosch says the much higher failure rate is due water and crap in US fuel . if you keep your filters changed at or before 15,000 miles the problems seem to all but go away.

GM and Dodge are recalling the CP4. Ford has said GFYS, but there is a lawsuit in progress so we'll see.

My new '22 has a CP4 so I don't see how Ford thinks they have any legal problems.
At over $100 for the pair, that gets a little pricey.

Once I got used to driving around with my check engine light on, my 6.7 has been a nice ride.

I see I just got my “customer satisfaction program” letter to extend the warranty on the EGR system. If I hang onto this thing long enough I might get a whole new truck. :)
 
Bosch says the much higher failure rate is due water and crap in US fuel . if you keep your filters changed at or before 15,000 miles the problems seem to all but go away.

GM and Dodge are recalling the CP4. Ford has said GFYS, but there is a lawsuit in progress so we'll see.

My new '22 has a CP4 so I don't see how Ford thinks they have any legal problems.
Three fuel samples from mine say nothing but diesel. Fuel filter changes at 5K didn't help mine at all.
 
Yep. Just spent 13k replacing the high pressure fuel system in my 2017 F450. Warranty went out in Nov and CP4 went out in Feb..FIgures. Fords auto replacement on there was a CP3 . So they know there is a problem with the CP4 if they automatically replace with a CP3. They refused to pay for the repairs but issued me a claim number in the event that they issue a recall.
 
Yep. Just spent 13k replacing the high pressure fuel system in my 2017 F450. Warranty went out in Nov and CP4 went out in Feb..FIgures. Fords auto replacement on there was a CP3 . So they know there is a problem with the CP4 if they automatically replace with a CP3. They refused to pay for the repairs but issued me a claim number in the event that they issue a recall.
Mine had 17K on the odometer when it failed. Ford told me that if the damage (visible by metal fragments) was at a certain point in the fuel system, that they had pre-determined that the causal factor would be bad fuel. No warranty coverage because of the 'bad fuel'.
 
Mine had 47k on it. So not high mileage. I have a friend that is a tech for Dodge. He said if they get a rig in for repairs of any kind they check to see if it has a CP4 they will change it out with out question.
 

This kit prevents the metal from the pump getting to injectors and the rest of the fuel system. I bought it for my '11 but never got it installed. My truck had 80k miles when I sold it. Now I have a '22 and I am trying to decide if I should buy this kit. I have always used motorcraft Cetane booster. It is supposed to help keep the EGR clean but I think it helps the pumps too.
 
Some guys suggest that a FASS or AirDog system will help eliminate air gaps and water intrusion.

I have the SPE kit. It arrived 6 days too late.


dApiRxu.jpg
 
Wow, I’ve never had a diesel pickup before, I’ve been looking at them recently. I’ve got one Ford in V10 and one V8 and no major issues over the years. I may have to do a little more research on diesel it appears.
 
As a automotive tech with 39 years experience I consider myself diesel illiterate. My shop has never worked on them short of oil changes and brakes. My 6.7 I purchased in July of 2010 was a eye opener for me. They are truly amazing when towing. I had the V-10 for 8 years before that. It was good to me but there was no comparing the two.
 
Any diesel with a CP-anything pump will greatly benefit from better fuel filtration and water separation. Bosch spec's the pumps to require filtration to 3 microns or less, but the vehicle manufacturers install filters that are 8-10 micron capable.
 
Fleetguards are listed at 3 micron on the 6.7 cummins. I change both fuels every other oil change. Its a 2017 with close to 70k miles...knock on wood.
 
Hey doc!

They're Trying To BS You!

They Fail & It's Spendy!

"THEY LOOK FOR METAL & BLAME YOUR FUEL"

Uh Huh!
 
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It isn't always that anything gets through the filter it usually because the filter restricts the fuel and the lack of lubrication takes the pump out.

If I ever kept one past the warranty I'd put the disaster prevention kit on. my dealer has warrantied every pump for customers that didn't have obvious filter or fuel neglect. your dealer is a big part of how it's handled, which you need because Ford will always screw you given a chance.

I bought my Ford at invoice but if I had to pay more I would, Ford sells for more than Dodge because they're worth it. I get all the Fiat I need in my farm equipment.
 
You Don't Keep a Vehicle Long Enough To Know Rather It Was Good Or Not!




It isn't always that anything gets through the filter it usually because the filter restricts the fuel and the lack of lubrication takes the pump out.

If I ever kept one past the warranty I'd put the disaster prevention kit on. my dealer has warrantied every pump for customers that didn't have obvious filter or fuel neglect. your dealer is a big part of how it's handled, which you need because Ford will always screw you given a chance.

I bought my Ford at invoice but if I had to pay more I would, Ford sells for more than Dodge because they're worth it. I get all the Fiat I need in my farm equipment.
 

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