Check rail pressure when the engine is off. It should be zero PSI, plus or minus 500 PSI. Look for low or no supply pressure, supply pump or fuel filter etc. Excess particulates can be a factor during excessive idle time due to injector tips having a build up of carbon due to the cold.
Does a CP3 pump add horsepower?
Double Your Potential. On its own, the CP3 produces 24,000 to 26,000 psi of fuel pressure and can support a truck making approximately 550 horsepower at the wheels. When combined with a second (stock displacement) pump, the potential to make more than 1,000 horsepower is on the table.
What injection pump does LBZ have?
Bosch OEM CP3 Injection Pump for LBZ/LMM 6.6L Chevrolet Duramax is a direct replacement, rebuilt with the latest updates provided by Bosch.
How many miles does a CP3 pump last?
The Bosch CP3, used on the ’01-to-’10 Duramax and ’03-to-current Cummins engines, is known to last 250,000 miles or more before needing to be replaced. Of course, performance enthusiasts also know these pumps are only capable of supporting approximately 500 hp.
How do I know if my CP3 is failing? – Related Questions
How much does it cost to replace a CP3 on Duramax?
The cost of doing just the LML CP4. 2-to-CP3 conversion is about $3,500 for parts and labor. That might take the breath away from many Duramax owners, but compared to the $8,000-plus it costs should the CP4.
How long does it take to replace a CP3 pump on a Duramax?
2 to CP3 typically requires about 16 hours, with most of that time spent removing parts to get to the pump that sits at the front engine valley.
How many miles should a fuel pump last?
It takes gas from the gas tank and sends it to the engine so your car, truck, or SUV can start and run. Your vehicle’s fuel pump should last at least 100,000 miles or more. If it doesn’t, or if you’ve exceeded that mileage milestone, you may notice any of the following seven signs.
How often does an injector pump need to be replaced?
Because most fuel injectors are only replaced every 50,000 to 100,000 miles when the vehicle is in a severe driving scenario mixed with a lack of maintenance, most require comprehensive repair. ‘
How many years does a fuel pump last?
Because of the important role they play, fuel pumps are meant to be tough and withstand almost the entire life of your car. You typically don’t have to replace your fuel pump until you have at least 100,000 miles on your vehicle, and fuel pumps have been known to last more than 200,000 miles!
How many miles will a CP4 pump last?
The result is the formation of air bubbles inside the CP4. Air in the pump means that metal rubs against metal, causing accelerated wear. This will eventually cause the CP4 to fail, often around 100,000 miles.
What year did Duramax stop using CP4?
The CP4 was standard equipment on the 2011-present Ford 6.7L Powerstroke. 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 Duramax?
GM intentionally put a defectively designed CP4 fuel pump in every one of its 2011-2016 Duramax diesel trucks—and, as the court noted today, from mile one it will begin to fail. There is no fix. The only question is how much will it cost the customer? Generally the answer is in the tens of thousands of dollars.
How common is CP4 failure?
The Cause of the CP4 Failures: Lack of Lubricity in the Fuel
The Bosch CP4 fuel pump has an unusually high failure rate in the U.S., upwards of 7%, when compared to 1% failure rate in Europe.
Does a CP3 pump need to be timed?
Unlike previous (pre-common-rail) injection pumps, it has fewer tasks to perform. The CP3 injection pump’s sole job is to create and regulate high-pressure fuel (it’s not timed with the engine’s crankshaft and camshaft).
Is there a recall on Duramax CP4?
In the meantime, a massive recall was announced for CP4. 2-equipped ’19 and ’20 trucks on November 12, 2021. According to the NHTSA at the time of the initial report, the recall applied to Ram’s 2500, 3500, 4500 and 5500 series trucks, and 222,410 units were affected in total.
What does a CP4 bypass kit do?
1 6.7L Power Stroke CP4 Bypass Kit features all quick connect lines that will eliminate the need for cutting the factory supply line, which is a debris introduction point, especially if the cut is not thoroughly deburred. It also eliminates the need to use a compression fitting, which is a potential leak point.
How much HP can a CP4 handle?
While the CP4 doesn’t put out quite as much volume as a CP3, the pumps are still very capable and can support more than 500 hp in stock form.
How do you prevent CP4 failure?
Prevent Failures & Prolong the Life of Your CP4 Pump
Always change fuel filters regularly. It is recommended that fuel filters be changed every 5000 miles despite the manufacturers recommendations. We recommend only using OE filters with CP4 Pumps.