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<h2>What is a high pressure fuel pump?</h2>
The high pressure fuel pump (HPFP) represents a pivotal component in direct injection gasoline engines, responsible for generating and sustaining the extremely elevated fuel pressure of approximately 2,000-3,000 psi essential for proper atomization and direct injection into the combustion chambers. This electrically powered, robust pump serves three key functions: supplying the necessary elevated pressure, regulating consistent fuel pressure for optimal performance, and delivering sufficient flow to fulfill engine demands. Proper pump operation is indispensable, as malfunctions can cause drivability issues, diminished power output, and emissions problems triggering the check engine light.
<h2>High pressure fuel pump failure symptoms</h2>
<ul>
<li>Reduced power and performance: The engine may feel sluggish, lack responsiveness, and exhibit a noticeable decrease in power, especially under high loads.</li>
<li>Starting and idling issues: The engine may be difficult to start, crank for longer than normal, or run rough and potentially stall when idling due to the inability to maintain consistent fuel pressure.</li>
<li>Check engine light illumination: The engine control unit will detect the fuel pressure issues and trigger the check engine light.</li>
<li>Increased fuel consumption: A failing high pressure fuel pump may not be able to deliver the required fuel flow, leading to incomplete combustion and higher than normal fuel usage.</li>
</ul>
<h2>Replacement of high pressure fuel pump</h2>
To begin the high pressure fuel pump replacement, the fuel system pressure must first be relieved. This involves disconnecting the battery to cut power to the fuel pump, then running the engine until it stalls to depressurize the fuel lines. Next, the necessary components must be removed to access and disconnect the pump, taking note of its orientation for proper reinstallation.
With the old pump disconnected, the new replacement unit can be installed in the original orientation, reconnecting all the electrical, <a href="https://a-premium-api.com/fuel-line-kit">fuel line</a>, and mounting connections. To prime the system, the battery is reconnected to power the new pump briefly and build up pressure. Finally, the engine is started and inspected for any fuel leaks, with performance tested to ensure proper operation. Any diagnostic trouble codes set by the old faulty pump should also be cleared at this stage.
<h2>A-Premium HPFP: engineered for reliable power, built to last</h2>
A-Premium's high pressure fuel pump is engineered with precision and durability to provide consistent, high-performance fuel delivery for your direct-injection gasoline engine. Leveraging advanced materials and manufacturing, this reliable pump features a robust, wear-resistant design that can withstand some extreme conditions of the engine compartment. Its accurate pressure regulation and ample flow capacity support optimal engine efficiency and prevent issues like misfiring. With a 90-day free return policy, a 2-year warranty, and 24/7 customer service, we ensure your satisfaction is our top priority. Seamlessly integrated with your vehicle's systems and rigorously tested, the A-Premium pump delivers dependable, high-quality performance you can trust to elevate your driving experience.&nbsp;

High Pressure Fuel Pump

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Vapor Canister Vent Solenoid

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Exhaust & Emission Systems

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Fuel Injection Pressure Regulator

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Fuel Injector

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Fuel Injector Module Wiring Harness

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Fuel Tank Strap

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Idle Air Control Valve

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Fuel Systems & Components

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The engine comprises many essential elements such as the lower cylinder block, upper cylinder head(s), and the cooling & lubricating systems. With A-Premium aftermarket engine components, you can expect that your engine deliver years of reliable performance. We offer a diverse selection of engine components from air filters and ignition coils (kits) to fuel pumps to cater to your needs.

2008 Audi A4 High Pressure Fuel Pump

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