Do you have a question about the CRF450R 2022 and is the answer not in the manual?
Questions and answers
Donald Prevost
May 26, 2025
I am having fuel pump issues on my 2022 Honda CRF450RWE that I purchased new. It has 70 hours on it. I would like to know how the fuel pump system operates. For instance: What shuts the fuel pump off when it achieves pressure? Where is that device located? Is it built into the pump somehow? (The only 2 wires go directly to the motor, with no apparent pressure switch). Does the ECM somehow shut the pump off when it achieves pressure? If so, where is that sensor?
For instance, after the bike has been sitting, if you just tap the start button you will hear the fuel pump run for a second or so and then stop. When the bike won't start, you never hear the pump run when you go to start it.
I have already replaced the fuel pump assembly when the bike was only a few weeks old. (the electric motor locked up) No help from the dealer/warranty because it's a "race bike". Any and all information you can give me, as comprehensive as possible, would be greatly appreciated.
Thank you!
1 comments:
Mr. Anderson
May 27, 2025
The 2022 Honda CRF450R uses a fuel injection system (PGM-FI) that includes a fuel pump to supply fuel to the engine. The fuel pump is electrically operated and controlled by the engine control unit (ECU). When the engine stop button is pressed, the ECU shuts off the fuel pump, stopping fuel flow to the engine. Additionally, opening the throttle fully while pressing the start button for 5 seconds helps discharge excess fuel from the engine, indicating ECU control of fuel delivery.
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Do you have a question about the CRF450R 2022 and is the answer not in the manual?
Questions and answers
I am having fuel pump issues on my 2022 Honda CRF450RWE that I purchased new. It has 70 hours on it. I would like to know how the fuel pump system operates. For instance: What shuts the fuel pump off when it achieves pressure? Where is that device located? Is it built into the pump somehow? (The only 2 wires go directly to the motor, with no apparent pressure switch). Does the ECM somehow shut the pump off when it achieves pressure? If so, where is that sensor? For instance, after the bike has been sitting, if you just tap the start button you will hear the fuel pump run for a second or so and then stop. When the bike won't start, you never hear the pump run when you go to start it. I have already replaced the fuel pump assembly when the bike was only a few weeks old. (the electric motor locked up) No help from the dealer/warranty because it's a "race bike". Any and all information you can give me, as comprehensive as possible, would be greatly appreciated. Thank you!
The 2022 Honda CRF450R uses a fuel injection system (PGM-FI) that includes a fuel pump to supply fuel to the engine. The fuel pump is electrically operated and controlled by the engine control unit (ECU). When the engine stop button is pressed, the ECU shuts off the fuel pump, stopping fuel flow to the engine. Additionally, opening the throttle fully while pressing the start button for 5 seconds helps discharge excess fuel from the engine, indicating ECU control of fuel delivery.
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