Does a 2001 Duramax have a fuel pump?
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.
Do lift pumps add horsepower?
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.
How do you test a CP3 pump?
You can simiulate max output for the CP3 by unplugging the FPR and fuel sensor. This forces the CP3 to put max output on the fuel rail. To do the check you will have to pull you glow plugs and watch excessive fuel from coming out the glow plug holes.
How long does a Duramax CP3 last?
Cp3 can go a long time more than that. 150,000 miles is the average life span of a common rail injection system, not just the LB7. The nozzle tips erode over time and the fuel spray gets distorted, mileage drops, and over all performance weakens.
Where does the fuel go in a Duramax?
Next, the fuel enters the injection pump, where it can go one of two places: it either gets pressurized and sent to the rail or goes back to the tank in a return line.
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.
What is injector return line bolt for GM Duramax LB7?
The Merchant Automotive 10491 Injector Return Line Bolt has been specially designed for your 2001-2004 GM 6.6L Duramax LB7. This is not just a replacement bolt. Merchant Automotive has redesigned this bolt head to allow nearly double the tool engagement.
What kind of fuel rail plug does a Duramax use?
The Attitude Performance Products 2004 LB7 Fuel Rail Plug for your 2001-2004 GM 6.6L Duramax is designed to replace the stock pressure relief valve. This valve helps maintain fuel rail pressure during heavy engine load conditions, while eliminating the potential for low fuel rail pressure DTC Code P1093.