The pump cannot build an adequate amount of pressure if the injection system has a leak. The high-pressure pump will most likely need to be replaced if dirt and/or water has contaminated the pump. Generally, the injectors are afflicted first, however, contaminants also will go through the CP3 pump.
How much does it cost to replace a CP3 pump?
2 replacement steps during the engine swap. These steps should be helpful for any diesel tech contemplating the S&S CP3 pump conversion or knowledgeable DIYers who aren’t afraid to tackle such diesel repair work. The cost of doing just the LML CP4. 2-to-CP3 conversion is about $3,500 for parts and labor.
Can you rebuild a CP3 pump?
While CP3 repair is not usually considered a “DIY” project, sometimes minor issues such as a leak can be corrected in the field. For more major concerns additional hard parts, special tools, and test equipment will be required for a complete repair.
How long does a Duramax fuel pump last?
The fuel pump is your vehicle’s unsung hero. 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.
What causes a CP3 pump to fail? – Related Questions
Can a fuel pump last 200000 miles?
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 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 do I know if my Duramax fuel pump is bad?
The GMC Duramax is a turbo-diesel engine produced by General Motors for pickup trucks, SUVs, and vans.
Signs of a Defective Injection Pump
- Difficulty accelerating: The engine requires fuel to function optimally.
- Reduced fuel efficiency: Another indication of a defective fuel pump is a reduction in fuel efficiency.
What year Duramax has fuel pump problems?
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.
When should I change my diesel fuel pump?
What are Fuel Pump Warning Signs?
- Unable to maintain speed. The feeling of the engine “choking” or struggling to maintain speed.
- Overheating. Another indicator of failure is engine overheating.
- All kinds of sputtering. Noises, backfires, and sputtering engines indicate a fuel pump gone bad.
- Engine light comes on.
What years should you stay away from a Duramax?
The Duramax has a long history. We recommend avoiding any GM vehicle equipped with the 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, and 2010 Duramax engines. In short, the newer model years show improved performance.
What year is the most desirable Duramax?
Some engines are more popular than others. For example, the pre-emissions Duramax engines made between 2001 and 2007 are highly sought-after for superior reliability.
Which Duramax engine is the most reliable?
The V-8 Duramax was introduced in 2001, replacing a 6.5-liter Detroit Diesel engine. The lack of an EGR, DPF, or a SCR system made LB7 one of GM’s most reliable diesel engines. Combining a lightweight chassis with the 300-horsepower, 520-lb-ft Duramax earned drivers upwards of 20+ mpg fuel economy.
What year Duramax gets the best mpg?
2021 Chevrolet Colorado Fuel Economy
Naturally, the 2.8L Duramax diesel achieves the best gas mileage with 23 mpg combined and an impressive 30 mpg on the highway for two-wheel-drive models.
How do you get 30 mpg on a Duramax?
Let’s take a look at how to get 30+ MPG with a Duramax.
Some popular methods include:
- Tuning.
- Removing the tailgate.
- Installing a bed cover.
- Not using your AC.
- Upgrading your air intake.
- Installing a new fuel filter.
How many miles per gallon does a 6.6 L Duramax diesel get?
This Duramax 6.6-liter V-8 gets 17 to 19 mpg on the highway.
How many miles per gallon does a Chevy 2500 6.6 diesel get?
2022 Chevy Silverado 2500 HD MPG
The 6.6-liter gas engine returned 14 mpg on the highway, while the diesel unit achieved 19 mpg.
What diesel truck gets the best mileage?
11 Most Fuel-Efficient Trucks (2022 Model Year)
- Chevrolet Silverado 1500 Duramax.
- GMC Sierra 1500 Duramax.
- Ford F-150 Hybrid.
- Jeep Gladiator EcoDiesel.
- Chevrolet Colorado Duramax.
- GMC Canyon Duramax.
- Hyundai Santa Cruz. Hyundai is still relatively new to manufacturing pickup trucks.
- Ford Ranger.
Is 200 000 miles alot for a Duramax?
Even when used extensively for towing and hauling, Powerstroke, Cummins and Duramax diesel trucks typically last well beyond 100,000 miles. Because of that, it’s not uncommon to see diesel pickups with 200,000 and even 300,000 miles commanding good resale values on the used truck market.