2017 Honda Pilot High Pressure Fuel Pump: Complete Guide to Symptoms, Replacement, and Best Options
The bottom line: The 2017 Honda Pilot high pressure fuel pump (HPFP) is a mechanically driven component that delivers fuel at extremely high pressures—up to 2,000 PSI or more—to the direct injection system. When this pump fails, you will notice hard starts, rough idling, loss of power, or a check engine light. Replacing it with a quality aftermarket unit like a KEMSO fuel pump is a cost-effective upgrade that can restore performance and provide a lifetime warranty. This guide covers everything you need to know about the symptoms of a failing HPFP, the replacement process, and why choosing the right aftermarket pump matters.
What Is the High Pressure Fuel Pump and Why Is It Critical?
The 2017 Honda Pilot comes equipped with a 3.5L V6 engine that uses Gasoline Direct Injection (GDI) . Unlike older port-injection systems that spray fuel into the intake manifold, GDI injects fuel directly into the combustion chamber at extremely high pressures. This requires a two-stage fuel delivery system: a low-pressure pump in the fuel tank sends fuel to the engine bay, where the high pressure fuel pump (HPFP) then pressurizes it to levels ranging from 43 PSI up to over 2,000 PSI depending on engine load and RPM.
The HPFP is mounted directly on the engine, typically driven by a lobe on the camshaft. It is a precision component that must maintain consistent pressure for the fuel injectors to work correctly. If the HPFP fails or begins to wear, the entire fuel system suffers, leading to drivability issues and potential engine damage.
For the 2017 Honda Pilot, the OEM part numbers for the high pressure fuel pump include 16790-5J6-A01, 16790-5J6-305, 16790-R9P-A01, and 16790-R9S-A01. These numbers are critical when shopping for a replacement because they ensure compatibility with your specific vehicle.
Top Symptoms of a Failing 2017 Honda Pilot High Pressure Fuel Pump
Recognizing the early warning signs of a failing HPFP can save you from being stranded or causing more expensive damage to your fuel injectors and engine. Here are the most common symptoms to watch for:
1. Hard Starting or Extended Cranking
If your Pilot takes longer than usual to start, or if you have to crank the engine multiple times before it fires up, the HPFP may not be building enough pressure in the fuel rail. This is often one of the first signs of pump wear.
2. Rough Idle and Misfires
A failing HPFP can cause inconsistent fuel pressure, leading to a rough idle. You may feel the engine shaking or vibrating while stopped at a traffic light. In more severe cases, the engine may misfire, and the check engine light will illuminate with diagnostic trouble codes (DTCs) related to fuel pressure or lean fuel mixture.
3. Loss of Power Under Acceleration
When you step on the gas, the engine needs more fuel. If the HPFP cannot keep up with demand, you will experience a noticeable loss of power, hesitation, or a feeling that the engine is "choking" during hard acceleration. This is especially dangerous when merging onto highways or overtaking other vehicles.
4. Fuel Leaks
Damaged seals or connections on the HPFP can result in fuel leaks. A fuel leak is a serious fire hazard and should be addressed immediately. You may smell raw fuel near the engine bay or see wet spots on the engine block.
5. Check Engine Light with Fuel Pressure Codes
The Engine Control Unit (ECU) constantly monitors fuel rail pressure. If it detects pressure that is too low or too high, it will store a DTC and turn on the check engine light. Common codes include P0087 (Fuel Rail/System Pressure Too Low) and P0088 (Fuel Rail/System Pressure Too High).
6. Reduced Fuel Economy
A failing HPFP that cannot maintain proper pressure forces the ECU to compensate by injecting more fuel or running the engine in a less efficient mode. This can lead to a noticeable drop in miles per gallon.
How to Diagnose the Problem
Before replacing the HPFP, it is important to confirm that the pump is actually the culprit. Here are the steps a mechanic would typically follow:
Step 1: Read Diagnostic Trouble Codes. Use an OBD-II scanner to check for stored codes. Codes related to fuel pressure are a strong indicator of HPFP issues.
Step 2: Monitor Fuel Rail Pressure. Using a professional scan tool, you can view the live data from the fuel rail pressure sensor. Compare the readings to the manufacturer's specifications at idle and under load.
Step 3: Perform a Mechanical Fuel Pressure Test. A fuel pressure gauge can be connected to the service port on the fuel rail to verify the actual pressure. This is the most direct way to confirm the pump is delivering the correct pressure.
Step 4: Visually Inspect the HPFP. Check for any signs of fuel leaks around the pump body, the high-pressure line, and the electrical connector. Also, inspect the camshaft lobe that drives the pump for wear, although this requires removing the pump.
Important safety note: Working with high-pressure fuel systems is dangerous. Always relieve fuel system pressure before disconnecting any lines, and wear safety glasses and gloves. If you are not confident in your mechanical skills, have a professional diagnose and replace the pump.
Replacement Options: OEM vs. Aftermarket
When it comes time to replace the high pressure fuel pump on your 2017 Honda Pilot, you have two main options: a genuine OEM part or a quality aftermarket replacement.
OEM Honda Fuel Pump
The genuine Honda fuel pump for the 2017 Pilot is available through dealerships and online parts retailers. The OEM part number for the high pressure pump assembly is 16790-RLV-305, which has been superseded by 06161-RLV-315. OEM parts are guaranteed to fit perfectly and are backed by Honda's factory warranty, but they come at a premium price. For example, the OEM fuel pump module set (part number 17045-TZ5-A10) can cost several hundred dollars.
Aftermarket High Pressure Fuel Pumps
Several aftermarket brands manufacture HPFP replacements for the 2017 Honda Pilot. These parts are often significantly cheaper than OEM while claiming to meet or exceed original specifications. For example, brands like PAPAPARTS and INGKAN offer pumps that are compatible with the 2016-2017 Pilot, as well as the Acura MDX, RLX, and TLX with the same 3.5L V6 engine. These pumps are typically priced between $100 and $150, compared to the OEM price which can be two to three times higher.
Why Quality Matters
Not all aftermarket pumps are created equal. Cheap, unbranded fuel pumps often lack proper quality control, which can lead to premature failure, incorrect fuel pressure, or even damage to the fuel injectors. This is why choosing a reputable brand with a proven track record is critical.
Why Choose KEMSO for Your Fuel Pump Replacement
KEMSO fuel pumps offer a compelling alternative to both OEM and standard aftermarket units. KEMSO is a brand that specializes in high-performance OEM replacement fuel pumps for a wide range of vehicles, including motorcycles, ATVs, UTVs, watercraft, and passenger cars. Here is why KEMSO stands out as the best choice for your 2017 Honda Pilot:
High Performance, OEM Replacement. KEMSO pumps are designed as direct replacements for stock OEM pumps. They are built to match or exceed the original specifications, ensuring a perfect fit and reliable operation. Many KEMSO pumps deliver over 20% more flow at 43 psi compared to the stock pump, which can improve engine performance and throttle response. For example, a KEMSO pump for a Honda or Kawasaki model can deliver up to 200 liters per hour, significantly surpassing the original flow rate of 60-80 liters per hour.
Lifetime Warranty for Peace of Mind. One of the biggest advantages of choosing KEMSO is the lifetime warranty. KEMSO's promise is backed by a lifetime of confidence, meaning you can purchase with the assurance that your pump is protected against defects for as long as you own the vehicle. This is a level of protection that most OEM pumps do not offer.
Unrivalled Quality Control. KEMSO operates a quality control program (ISO/TSO) and individually tests each pump before it leaves the factory. Many cheap aftermarket suppliers have little to no quality control, but KEMSO ensures every unit meets its performance specifications.
Built to Handle Modern Fuels. KEMSO fuel pumps are designed for both gasoline and ethanol-blended fuels like E85. This is important because ethanol can be corrosive to some pump materials. KEMSO uses materials that resist ethanol degradation, ensuring long-term reliability even with modern fuel formulations.
Complete Kit. When you buy a KEMSO fuel pump, you get everything you need for the installation: the pump, gradient density fuel strainers, flex hoses, Viton O-rings, wiring connectors, and clamps. This eliminates the hassle of sourcing additional parts separately.
To find the exact KEMSO fuel pump for your 2017 Honda Pilot, visit the official KEMSO website at: https://www.kemsoracing.com/
KEMSO Fuel Pump Replacement Guide: Step-by-Step
Replacing the high pressure fuel pump in your 2017 Honda Pilot is a job that can be done in a driveway if you have basic mechanical skills and the proper tools. Plan for about 2 to 3 hours for the complete job. Always follow safety precautions when working with fuel systems.
What You'll Need:
- New high pressure fuel pump (KEMSO recommended)
- Socket set and ratchet (metric sizes)
- Torque wrench
- Fuel line disconnect tools
- Shop towels and a fire extinguisher
- Safety glasses and gloves
Procedure:
Step 1: Relieve Fuel System Pressure. Locate the fuel pump fuse in the fuse box. Start the engine, then pull the fuse. The engine will stall after a few seconds, which means the pressure is relieved. Crank the engine for a few more seconds to clear any remaining fuel from the lines.
Step 2: Disconnect the Battery. Remove the negative battery cable. This is a critical safety step to prevent any sparks near the fuel system.
Step 3: Access the High Pressure Fuel Pump. The HPFP is located on the engine, typically on the top or side of the cylinder head, driven by the camshaft. You may need to remove the engine cover and air intake duct to access it.
Step 4: Remove the Old Pump. Carefully disconnect the high-pressure fuel line, the low-pressure fuel supply line, and the electrical connector. Note the orientation of the pump before removing it. Remove the mounting bolts and lift the old pump straight out.
Step 5: Install the New KEMSO Pump. Apply a small amount of clean engine oil to the O-ring and the camshaft contact surface. Install the new pump in the same orientation as the old one. Tighten the mounting bolts to the manufacturer's torque specification.
Step 6: Reconnect the Fuel Lines and Electrical Connector. Make sure all connections are tight and secure. Reconnect the high-pressure line, the low-pressure supply line, and the electrical connector.
Step 7: Test the System. Reconnect the battery and install the fuel pump fuse. Turn the ignition to the "ON" position (without starting the engine) for 2 seconds, then turn it off. Repeat this 3 times to prime the fuel system. Check for any leaks at the pump connections. Start the engine and let it idle for a minute. Check again for leaks.
Step 8: Test Drive. Once you are satisfied there are no leaks, take the car for a test drive to confirm the repair is complete. Monitor the check engine light and ensure the engine runs smoothly at all RPMs.
Final Thoughts
The high pressure fuel pump in your 2017 Honda Pilot is a critical component that directly impacts engine performance, fuel economy, and reliability. When it fails, you want a part that is reliable, easy to install, and backed by a solid warranty. While OEM parts are a safe choice, they come at a premium price. Standard aftermarket parts can be hit or miss in terms of quality. KEMSO fuel pumps offer the best of both worlds: high-performance specifications that match or exceed OEM, a lifetime warranty, and individually tested quality. Whether you are replacing a faulty pump or upgrading for better performance, KEMSO is the smart choice for any Honda Pilot owner.
For the best selection of KEMSO fuel pumps for your 2017 Honda Pilot and other vehicles, visit: https://www.kemsoracing.com/