The GMC and Chevy Duramax pick-up trucks do NOT have a lift pump to supply fuel to the engine. From the factory, the CP3 injection pump is the truck's only means of getting fuel from the tank to the engine.
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 2016.31 Jul 2019
Does a 2007 Duramax have a fuel pump?
The GMT-800 2007 "Classic" Duramax's do not have an intank fuel pump. Same as 2006 LBZ's.21 Sept 2006
Does a Duramax have a fuel pump in the tank?
Varying from most conventional diesel engines, the Duramax system doesn't feature a lift pump. Rather, the injection pump sucks fuel from the tank, creating a vacuum from the fuel tank through the fuel lines and fuel filter. It is the most powerful diesel pickup truck engine GM has produced.17 Aug 2021
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.25 Apr 2017
Does a diesel need a lift pump?
Diesel engines are already fuel efficient, but adding a better lift pump can improve that performance even more. The most important thing to remember is that you'll need a lift pump that works with your specific fuel injectors. Most importantly, if you have a diesel engine, you'll need a pump designed for diesel fuel.25 Jan 2021
Will a lift pump make more power?
Most lift pump companies cite superior water separation and better supply pressure as reasons to purchase their product, but in most cases, a higher-pressure lift pump can add power, too. While this pressure was beyond the factory specifications, it helped add a good deal of power.18 Sept 2013
Do all diesels have a lift pump?
Almost all diesel engines include a lift pump, although some are separate and some are directly integrated into the engine. Your lift pump also supplies pressure along with the fuel.25 Jan 2021
What injection pump does a LBZ have?
LMM CP3
Does a CP3 need a lift pump?
A lift pump should be the absolute first thing you do to the truck. Cp4 or cp3, doesnt matter. You need to get that fuel from the tank up to the injection pump. If you're wondering if a lift pump will prevent the failure of the cp4 the answer is no.5 Aug 2014
Will a lift pump help my Duramax?
The Duramax is probably the most responsive to an aftermarket lift pump. The GMC and Chevy Duramax pick-up trucks do NOT have a lift pump to supply fuel to the engine. From the factory, the CP3 injection pump is the truck's only means of getting fuel from the tank to the engine.
Why do I need a lift pump on my Duramax?
The GMC and Chevy Duramax pick-up trucks do NOT have a lift pump to supply fuel to the engine. From the factory, the CP3 injection pump is the truck's only means of getting fuel from the tank to the engine. Because we have a few different systems for the Duramax, install difficulty and times will vary.
Does a lift pump increase HP?
For diesels, lift pumps are the unsung heroes of their respective performance world. In addition to making big horsepower a reality, they add reliability to the entire fuel system, yield improved filtration over stock and (if electric) offer infinite adjustability over fuel pressure.11 Oct 2016