Do I really need a lift pump on my Duramax?

Do I really need a lift pump on my Duramax?

Older Duramax models came equipped with a Cp3 high pressure fuel pump. This pump is generally considered to be more reliable but still needed a lift pump to support 520 -530 RWHP. You should install a lift pump if you just want to have the power there for fun, or if you have a dedicated competition truck.

Is a lift pump worth it?

When You Need One. Anytime you plan to pursue more power than what your truck made in stock form, a lift pump is a good idea. Because the injection pump and injectors are arguably the most vital components in a diesel engine, keeping them supplied with plenty of fuel keeps them cool, lubricated and functioning properly …

Why the Duramax never had a lift pump?

But for some strange reason, the 6.6 Duramax came from the factory sans lift pump. The fuel takes the same path from the tank, through a filter, and into the injection pump, except now the CP3 is responsible for sucking fuel from the tank. This is true on every Duramax from the LB7 in 2001 to the LML in 2016.

Does my truck need a lift pump?

If you’re upgrading your fuel injectors, you’ll also need to upgrade the lift pump. The more fuel your injectors deliver, the more they need a lift pump to help pressurize and deliver the fuel to the injectors and engine. This prevents fuel starvation and will keep your system running at a consistently excellent level.

How common is CP4 failure Duramax?

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

What are the benefits of a lift pump Duramax?

Premium Member. It keeps the fuel rails from draining with saves the cp3 or cp4, depending on what truck you have. Plus, it provides extra filtration which you can’t have enough of.

Does the 2020 Duramax have a lift pump?

That’s right, the L5P Duramax comes from the factory with a built-in lift pump. This improves longevity of the injection pump because it takes a significant work load off of it. On previous engines, the injection pump would have to both pressurize fuel for the injectors and siphon fuel from the tank.

How long will a CP4 pump last?

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.

What is the purpose of a lift pump on a diesel?

What is a diesel fuel lift pump? A diesel fuel lift pump is a priming pump that transfers fuel from the tank to the fuel injection system. They are called lift pumps, because in most equipment the tank is located below the engine, the fuel has to be lifted up from the tank to the engine.

Does the 2021 Duramax have a lift pump?

That’s right, the L5P Duramax comes from the factory with a built-in lift pump.

What year Duramax has lift pump?

If ever there was an aftermarket product every Duramax-powered ’11-’16 Chevrolet and GMC needed, it would be an electric lift pump. From its inception in 2001 all the way through to the 2016 model year, GM’s diesel-equipped HD trucks were void of a factory lift pump.

What does the CP3 pump do on a Duramax?

But for some strange reason, the 6.6 Duramax came from the factory sans lift pump. The fuel takes the same path from the tank, through a filter, and into the injection pump, except now the CP3 is responsible for sucking fuel from the tank.

What is the best lift pump for LML trucks?

One elegant pump solution which is only available for the 2011+ LML trucks (for now) is the Fleece PowerFlo in-tank lift pump assembly. It’s by far the easiest to install and quietest lift pump out there, since the pumps sit inside the fuel tank which insulates the noise.

How well does a Duramax air filter work?

The stock filter/water separator on a Duramax will remove particles down to about 10 microns in size, does an OK job of removing water, but does nothing at all for the air that collects in the system.

What happened to the 2001 Chevy Silverado’s lift pump?

One such automotive mystery was started in 2001, when GM introduced the Silverado HD’s powered by the 6.6-liter Duramax diesel V8. It was a great powerplant and was the first of the big 3 to come equipped with common rail fuel injection, but there was one item missing which every other diesel pickup had before and since: a lift pump.