DAVRPES High Pressure Fuel Pump 16790-5A2-A01 User Manual

1. Introduction

This manual provides essential instructions for the safe and correct installation, operation, and maintenance of your DAVRPES High Pressure Fuel Pump, Model 16790-5A2-A01. Please read this manual thoroughly before attempting any installation or service.

Product Overview

The DAVRPES High Pressure Fuel Pump is a critical component in your vehicle's fuel injection system, designed to deliver fuel at the precise pressure required for optimal engine performance and efficiency.

Figure 1: DAVRPES High Pressure Fuel Pump and packaging.

Compatibility

This high-pressure fuel pump is compatible with the following vehicle models:

• 2015-2016 Acura TLX l4-2.4L
• 2013-2014 Honda Accord l4-2.4L

Replacement Part Numbers: 16790-5A2-A01, 167905A2, 10P05, 04P19, 21002, 20669, 167905A2A01, 295100-0333.

Figure 2: Fuel pump with vehicle compatibility details.

Figure 3: Fuel pump displaying various compatible part numbers.

2. Setup and Installation

Safety First: Before beginning installation, ensure the vehicle's battery is disconnected and the fuel system pressure is relieved. Always wear appropriate personal protective equipment, including gloves and eye protection. If you are not confident in performing this installation, seek professional assistance.

Figure 4: Visual guide for high-pressure fuel pump installation.

Installation Steps:

1. Remove the fuse box cover and the fuel pump fuse.
2. Remove the engine cover.
3. Disconnect the fuel pressure regulator valve connector. Run the engine for approximately 10 seconds to release residual fuel pressure.
4. Open the clip holding the low-pressure fuel hose and carefully remove the hose.
5. Remove the bolt and bracket securing the fuel pump assembly.
6. Remove the PCV hose by squeezing its clip and gently wiggling it out of the fittings.
7. Disconnect the low-pressure sensor connector. Then, remove the low-pressure sensor from the high-pressure fuel pump.
8. Remove the fuel line connected to the fuel rail and the fuel return hose.
9. Remove the three bolts securing the high-pressure fuel pump.
10. Carefully remove the high-pressure fuel pump, ensuring the sleeve does not fall out of the bore. Remove the sleeve from the bore.
11. Install the new high-pressure fuel pump in reverse order. Once installed, reinsert the fuel pump fuse and replace the fuse box cover.

After installation, inspect all connections for leaks and ensure proper functionality before operating the vehicle.

3. Operating Instructions

Once correctly installed, the DAVRPES High Pressure Fuel Pump operates automatically as an integral part of your vehicle's fuel delivery system. It is designed to maintain the necessary fuel pressure for the engine's fuel injectors, ensuring efficient combustion.

No direct user intervention is required for the operation of the fuel pump itself. Its function is controlled by the vehicle's Engine Control Unit (ECU) based on engine demands.

Ensure all connections are secure and leak-free after installation. Listen for any unusual noises from the fuel pump area during initial operation, which could indicate an installation issue.

4. Maintenance

To ensure the longevity and optimal performance of your DAVRPES High Pressure Fuel Pump and the overall fuel system, consider the following maintenance guidelines:

• Fuel Filter Replacement: Adhere to your vehicle manufacturer's recommended schedule for fuel filter replacement. A clogged fuel filter can strain the fuel pump.
• Regular Inspection: Periodically inspect fuel lines, connections, and the fuel pump itself for any signs of wear, corrosion, or leaks. Address any issues promptly.
• Fuel Quality: Use high-quality fuel as recommended by your vehicle manufacturer. Poor quality fuel can lead to deposits and premature wear of fuel system components.
• Address Warning Lights: If your vehicle's 'Check Engine' light illuminates, especially if accompanied by symptoms related to fuel delivery, have the vehicle diagnosed by a qualified mechanic.

5. Troubleshooting

If you experience issues that may be related to the high-pressure fuel pump, consider these basic troubleshooting steps. For complex problems, professional diagnosis is recommended.

• Engine Misfires or Stalling: This could indicate insufficient fuel pressure. Check for proper electrical connections to the fuel pump and ensure fuel lines are not kinked or obstructed.
• Difficulty Starting: If the engine cranks but does not start, or takes a long time to start, it might be a fuel delivery issue. Verify that the fuel pump is receiving power and that there is adequate fuel pressure.
• Fuel Leaks: Any visible fuel leaks must be addressed immediately due to fire hazard. Re-check all connections and seals made during installation.
• Unusual Noises: A whining or buzzing sound from the fuel tank or engine bay that is louder than usual could indicate a failing fuel pump or an issue with fuel delivery.
• Check Engine Light: If the 'Check Engine' light illuminates, retrieve diagnostic trouble codes (DTCs) using an OBD-II scanner. Codes related to fuel pressure or fuel system performance can point to a fuel pump issue.

Important: Always consult a certified automotive technician for accurate diagnosis and repair of fuel system problems.

6. Specifications

7. Warranty and Support

Warranty Information

This DAVRPES High Pressure Fuel Pump comes with a 2-Year Warranty from the date of purchase. This warranty covers defects in materials and workmanship under normal use and service.

The warranty does not cover damage caused by improper installation, accident, misuse, abuse, neglect, or unauthorized modification.

Customer Support

For warranty claims, technical assistance, or any questions regarding your DAVRPES product, please contact DAVRPES customer service. Please have your purchase details and product model number ready when contacting support.

Note: Specific contact information (phone number, email, website) is typically provided on the product packaging or official brand website.