Why do Ford CP4 fuel pumps fail?

why do ford cp4 fuel pumps fail

Why do Ford CP4 fuel pumps fail?

Why Is the CP4 Pump Allegedly Failing? The primary reason the CP4 pump is said to fail is because the pump was not designed for diesel fuel in the United States. Bosch is a European company, and Europe uses diesel fuel with more sulfur than U.S. diesel fuel. The primary reason the CP4 pump is said to fail is because the pump was not designed for diesel fuel in the United States. Bosch is a European company, and Europe uses diesel fuel with more sulfur than U.S. diesel fuel.

How common is CP4 failure?

But how common is CP4 failure? The CP4 has been documented to fail mostly in cases of 100,000 miles in the USA. Other forums have disclosed that the failure rate is within 5-7%, specifically for LML Duramax engines. Despite this, the pump is well cherished by a lot of diesel engine enthusiasts.

Are CP4 pumps really that bad?

While supplying high-pressure fuel is an injection pump’s job, the CP4 does so with a high probability of failing (typically around the 100,000-mile mark) and leaving owners with a need to overhaul their truck’s entire fuel system, at a cost that can be anywhere between $8,000 and $10,000.

Does Ford still use the CP4 pump?

. From 2011-2016 GM also used the CP4 in the LML & LGH Duramax engines, switching to the Denso HP4 in 2017 when the L5P was released.

How common is CP4 failure LML?

I have read that as much as 7% of CP4 fail on LML Duramax.

Are CP4 pumps really that bad?

While supplying high-pressure fuel is an injection pump’s job, the CP4 does so with a high probability of failing (typically around the 100,000-mile mark) and leaving owners with a need to overhaul their truck’s entire fuel system, at a cost that can be anywhere between $8,000 and $10,000.

Does Ford still use the CP4 pump?

. From 2011-2016 GM also used the CP4 in the LML & LGH Duramax engines, switching to the Denso HP4 in 2017 when the L5P was released.

How do you prevent CP4 pump failure?

The problem with the CP4 pump is so well known that several companies sell expensive kits that cost up to $3,600 (before labor costs) to try to prevent the problem. Popular fixes involve boosting the fuel pressure with an additional pump, or replacing the CP4 with the more reliable, but less fuel efficient, CP3 pump.

How much does it cost to replace a CP4 pump?

The “CP4” injection pump, as it’s called by many, is the heart of these diesels, and in the past few years it has garnered a reputation for catastrophic failure, resulting in repair costs north of $8,000.

Will a lift pump prevent CP4 failure?

Prevent CP4.

An aftermarket lift pump system is the most affordable way to keep the CP4. 2 alive. FASS, AirDog and Fuelab are the big names in town here. Each of them offer a complete system that not only provides sufficient fuel supply pressure for the CP4.

Who makes CP4 pump?

The Bosch CP4. 2 debuted in the North American truck segment back in 2011 on both the 6.7L Power Stroke and the LML Duramax, although a similar version (CP4. 1) had already been brought to other markets such as Volkswagen, BMW, and more than 20 other brands, globally.

Does Ford cover CP4 failure?

What is more, the “repair” cost for a catastrophic CP4 failure is frequently upwards of $10,000, a cost which Ford generally refuses to cover under warranty by blaming the consumer for “fuel contamination” — contamination which is caused by the shredding CP4 itself.

Does 2020 powerstroke have CP4?

The BOSCH® OEM New pump is brand new, with every piece on the pump being new, same as you would get from your local Ford dealer. This pump features all the most up to date components from BOSCH® and features a 3 year, unlimited mileage warranty.

Is there an updated CP4 pump?

Description. GM OEM Newly Updated Stock Replacement CP4 Pump. This is the New Updated CP4 from Bosch that Took Care of the Failures the Early Version Pumps.

Is the CP4 covered under warranty?

Yes they covered it. First thing they did was test for water in the diesel. When they found no water they covered the repair. He really had low mileage.

Are CP4 pumps really that bad?

While supplying high-pressure fuel is an injection pump’s job, the CP4 does so with a high probability of failing (typically around the 100,000-mile mark) and leaving owners with a need to overhaul their truck’s entire fuel system, at a cost that can be anywhere between $8,000 and $10,000.

Does Ford still use the CP4 pump?

. From 2011-2016 GM also used the CP4 in the LML & LGH Duramax engines, switching to the Denso HP4 in 2017 when the L5P was released.

Do fuel additives help CP4?

So we all know the CP4 has problems , and some of the best techs say adding things like FPPF or Stanadyne fuel lubricant additives and changing your filters often will cut your chances of a disaster way down. not just any additive but the lubricant specific ones.

What year did RAM switch to CP4 pump?

But that 15-year run came to an end in when Ram made the somewhat questionable decision to switch the injection pump to the CP4. 2. Diesel owners in the know were somewhat frustrated with this decision, but to understand why, we need to look at the track record of each pump.

Does the CP4 bypass kit work?

Since its debut in 2016, the original S&S 6.7L Power Stroke CP4 Bypass Kit (Disaster Prevention Kit) has safeguarded thousands of injectors from CP4 debris. In fact, it works so well that it has been copied by multiple opportunists within the aftermarket.

What does CP4 stand for?

CP4

AcronymDefinition
CP4 Control Period 4 (UK rail regulations)
CP4 Committee on Politics, Philosophy and Public Policy
CP4 Crystal Plaza 4
CP4 Chemical Polish 4

What causes a CP4 pump to fail?

There are many theories as to why the CP4 pumps fail, but it is typically associated with a lack of lubricity. This ultimately ends with metal shavings being released into the fuel system. One potential contributing factor is the ultra-low sulfur diesel (USLD) fuel available at the pump nowadays.

Is there a problem with the CP4 fuel filter?

The pump was changed/updated (still CP4) and there have been very few problems. If you still get water in your fuel, it will still take the pump out. The fuel filter design was changed for 17MY and seems to be solid as far as keeping water out. I wouldn’t have any concerns buying one (heck I did).

What are CP4 fuel pumps and how do they work?

The CP4 fuel pumps allegedly operate at high pressures to achieve greater fuel efficiency by pumping less fuel through the engines, something that has been a success in Europe. But the class action alleges cleaner diesel fuel in the U.S. makes the CP4 fuel pumps out of specification and causes inadequate lubrication.

When did the Bosch CP4 fuel pump come out?

Posted on September 1, 2021 by Jeremy_XDP 0 The Bosch CP4 pump is a high-pressure fuel pump, or injection pump, that debuted in 2011 in the Ford Powerstroke and GM Duramax engines. The CP4 was Bosch’s updated model to the incredibly reliable and well-regarded CP3 pump.