What happens when a Duramax CP4 pump fails?

CLICK HERE to purchase our LML CP4 High Pressure Fuel Pump Failure Kit The 2011-2016 Duramax suffers from a high pressure fuel pump issue unique to this year range. Failure of this CP4 pump is usually catastrophic, causing instant contamination of the entire fuel system with metal particulates.

What is the GM diesel truck fuel pump defect?

Consumers who own vehicles installed with a Bosch CP4 fuel injection pump may be affected by a GM diesel truck fuel pump defect. What is the GM Diesel Truck Fuel Pump Defect?

Can a diesel fuel additive prevent CP4 pump failure?

Using a commercially available diesel fuel additive can be helpful, but cannot be guaranteed to prevent CP4 pump failure.

What causes a GM fuel pump to run dry?

According to plaintiffs in several GM lawsuits, when a Bosch CP4 pump is used with American fuel, it is not lubricated enough and is forced to run dry. This causes the pump to slowly destroy itself through metal-on-metal friction as reported by Car Complaints.

What are the features of a Duramax high pressure fuel system?

Your Duramax high-pressure fuel system relies on several electronic components and sensors for proper operation. The Fuel Temperature Sensor can commonly throw codes and effect engine performance if it has failed. Features: Stock Replacement 13 Month Unlimited Mileage Warranty Replaces OE Part #: 97224993 Bostech Old Part#: ISK949

What is the fuel filter base on a Duramax?

The Alliant AP0029 Fuel Filter Base and Hand Primer Seal Kit is designed to rebuild the fuel filter base (also known as a fuel filter head) found on your 2001-2010 GM 6.6L Duramax.

Is there a generic fuel system for Duramax engines?

It is generic enough to cover all Duramax engines, although it should be noted that there are several detailed differences between the LB7, LLY, LBZ and LMM fuel and engine management systems. I will cover each of the major fuel system components, their operation and various common service issues related to each component.

Are there any issues with the Duramax fuel pump?

The new injectors available from us and others are updated and do not have the cracking issue. Fuel Filter Housing Oring Leaks – The Duramax fuel system does not have any sort of low pressure fuel pump pushing fuel to the engine from the tank. The injection pump sucks all the fuel from the tank.

When to replace the fuel injector on a Duramax?

The Dorman 904-122 Passenger Side Fuel Injector Return Line for your 2004.5-2010 GM 6.6L Duramax is an affordable option to the factory replacement. Dormans Fuel Injector Line restores proper operation of your fuel injection system. These should be replaced when installing new injectors to avoid any leaks. Fits passenger/left side.

What causes a fuel filter to leak on a Duramax?

Fuel Filter Housing Oring Leaks – The Duramax fuel system does not have any sort of low pressure fuel pump pushing fuel to the engine from the tank. The injection pump sucks all the fuel from the tank.

Where can I get a Duramax fuel injection pump?

Please try again later. http://www.toxicdiesel.co/p/1618 Industrial Injection offers stock CP3 replacement pumps from Bosch for 2006-2010 Duramax 6.6L Diesels engines. These pumps are factory replacements for Chevrolet Silverado and GMC Sierra Duramax Diesel engines, intended to be used in stock engines with no modifications. Loading…

What causes low fuel pressure on a Duramax?

If you remember the basic fuel system anatomy, you’ll recall there is a fuel pressure relief valve in the rail, and occasionally it can open prematurely and cause low rail pressure. The one way to spot an failing pressure relief valve it to fire up your scan tool, recreate the symptom, and record another data log.

Is the L5P duramax equipped with a lift pump?

Interestingly enough, the 5.9 and 6.7 Cummins trucks which were equipped with an almost identical CP3 were equipped with a lift pump, and the newest L5P Duramax has one, all of which suggests a lift pump is an important part of a diesel fuel system. Yet the mystery remains, why didn’t GM put one there in the first place.

When to replace the CP3 pump in a Duramax?

http://www.toxicdiesel.co/p/1618 Industrial Injection offers stock CP3 replacement pumps from Bosch for 2006-2010 Duramax 6.6L Diesels engines. These pumps are factory replacements for Chevrolet Silverado and GMC Sierra Duramax Diesel engines, intended to be used in stock engines with no modifications. Loading…

How many gallons of fuel does a Duramax have?

Depending on the model, you might have between 25 and 40 gallons of capacity, and on most trucks there is a low-pressure fuel pump which sits inside the tank and pushes the fuel toward the engine at a relatively low pressure.

What kind of lift pump does a Duramax have?

This is true on every Duramax from the LB7 in 2001 to the LML in 2016. Interestingly enough, the 5.9 and 6.7 Cummins trucks which were equipped with an almost identical CP3 were equipped with a lift pump, and the newest L5P Duramax has one, all of which suggests a lift pump is an important part of a diesel fuel system.

How does the fuel pump work on a Duramax?

Finally, once the pressurized fuel enters the injector, it either gets sprayed directly into the cylinder to make a big boom, or if there is extra, it flows back to the tank through the injector return to start its journey all over again.

When does a LLY Duramax water pump fail?

While the seal issues found on LB7 trucks have been largely solved, the LLY Duramax can still suffer from water pump failure. Over time and at higher mileage, the seals in the factory water pumps can fail. This frequently occurs after 80-100,000 miles.